Q: Is 625,631 a Prime Number?
A: Yes, 625,631 is a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 625631 can be evenly divided by 1 and 625,631, with no remainder.
Since 625,631 can be divided by just 1 and 625,631, it is a prime number.