Q: Is 725,440 a Prime Number?
A: No, 725,440 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 725440 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 2,267 4,534 9,068 11,335 18,136 22,670 36,272 45,340 72,544 90,680 145,088 181,360 362,720 and 725,440, with no remainder.
Since 725,440 cannot be divided by just 1 and 725,440, it is not a prime number.