Q: Is 421,625 a Prime Number?
A: No, 421,625 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 421625 can be evenly divided by 1 5 25 125 3,373 16,865 84,325 and 421,625, with no remainder.
Since 421,625 cannot be divided by just 1 and 421,625, it is not a prime number.