125 (number)

125 (ones hundred [and] twenty-five) is the natural number following 124 and preceding 126.

In mathematics

125 is the cube of 5. It can be expressed as a sum of two squares in two different ways, 125 = 10² + 5² = 11² + 2².^[1]

125 and 126 form a Ruth-Aaron pair under the second definition in which repeated prime factors are counted as often as they occur.

Like many other powers of 5, it is a Friedman number in base 10 since 125 = 5^{1 + 2}.

In the military

• United States Air National Guard 125th Special Tactics Squadron unit in Portland, Oregon
• United States Air Force 125th Fighter Wing is an Air National Guard unit located at Jacksonville International Airport, Florida
• Piasecki H-21 Workhorse/Shawnee is an Arctic rescue helicopter
• United States Navy VAW-125 squadron at Naval Air Station, Norfolk, Virginia
• United States Navy Strike Fighter Squadron 125 (VFA-125) strike fighter squadron at Naval Air Station, Lemoore, California
• USNS Mission San Jose (T-AO-125) was a United States Navy Mission Buenaventura class fleet oiler fleet oilers during World War II
• USS Tide (AM-125) was a United States Navy Auk-class minesweeper for removing mines from minefields laid in the water
• Northrop YC-125 Raider utility transport plane

In transportation

• The Fiat 125 automobile
• Many motorcycle licenses and racing events (e.g. MotoGP) limit the capacity of the engine to 125cc. Examples of 125cc motorcycles include;
  • The Honda XRM 125 motorcycle
  • The Yamaha YZ125 is a 125 cc two-stroke motorcycle for motocross riding
• The Harlem-125th Street Metro-North Railroad station serves residents of the Harlem neighborhood of Manhattan, New York
• The InterCity 125, sometimes referred to simply as "one two five"; a British high-speed train
• New Jersey Transit bus route 125
• London Buses route 125 is a Transport for London contracted bus route in London
• 125 is the number of many roads, including Mexican Federal Highway 125
• Pan Am Flight 125 from London’s Heathrow Airport to New York's John F. Kennedy International Airport which had pressurization problems on March 10, 1987
• The 125th Street Bridge crosses the Mississippi River in the Minnesota
• STS-125 is the Space Shuttle Atlantis mission which was the final mission to service the Hubble Space Telescope, launched May 11, 2009 at 2:01 pm EDT landed May 24, 2009 at 11:39:05 am EDT

In other fields

125 is also:

• The year AD 125 or 125 BC
• 125 AH is a year in the Islamic calendar that corresponds to 742 – 743 CE
• 125 Liberatrix is a Main belt asteroid
• The atomic number of the yet-to-be-discovered element Unbipentium
• Sonnet 125 by William Shakespeare
• 125th Street, Manhattan, New York City
  • 125th Street (New York City Subway), multiple subway stations
• CA-125, also known as CA125, is an abbreviation for cancer antigen 125
• 125 High Street is a 30-floor highrise in Boston

See also

• 125th (disambiguation)
• 125th Anniversary of the Confederation of Canada Medal
• 125th Street (disambiguation)
• List of highways numbered 125
• United Nations Security Council Resolution 125

References