Q: Is 625,642 a Prime Number?
A: No, 625,642 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 625642 can be evenly divided by 1 2 31 62 10,091 20,182 312,821 and 625,642, with no remainder.
Since 625,642 cannot be divided by just 1 and 625,642, it is not a prime number.