The prime factor of 625 is 5.
http://wiki.answers.com/Q/What_are_the_prime_facto...

The factors of 625 are: 1 5 25 125 625. The prime factors are: 5 x 5 x
http://www.chacha.com/question/whatistheprimef...

A prime factor is a number that can not be broken down into any other numbers. For example 3 is a prime factor because the only way to get three is by multiplying 3 and 1 together.
http://answers.ask.com/Science/Mathematics/what_is...

5*5*5*3*3*3*3*13 OR 5^3 * 3^4 * 13
http://answers.yahoo.com/question/index?qid=200802...
