Q: Is 820,625 a Prime Number?
A: No, 820,625 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 820625 can be evenly divided by 1 5 13 25 65 101 125 325 505 625 1,313 1,625 2,525 6,565 8,125 12,625 32,825 63,125 164,125 and 820,625, with no remainder.
Since 820,625 cannot be divided by just 1 and 820,625, it is not a prime number.