Tuesday, February 22, 2011

625

625 = 54. It is a perfect fourth power.

Two fourth powers use the same digits: 54 = 625 and 44 = 256.

625 has two representations as a sum of two squares: 625 = 72 + 242 = 152 + 202.

625 is the hypotenuse of a primitive Pythagorean triple: 6252 = 3362 + 5272.



According to a 2010 White House news release, 625 people lost their health insurance every hour in 2009.

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