Q: Is 400,625 a Prime Number?
A: No, 400,625 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 400625 can be evenly divided by 1 5 25 125 625 641 3,205 16,025 80,125 and 400,625, with no remainder.
Since 400,625 cannot be divided by just 1 and 400,625, it is not a prime number.