Q: Is 725,420 a Prime Number?
A: No, 725,420 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 725420 can be evenly divided by 1 2 4 5 10 19 20 23 38 46 76 83 92 95 115 166 190 230 332 380 415 437 460 830 874 1,577 1,660 1,748 1,909 2,185 3,154 3,818 4,370 6,308 7,636 7,885 8,740 9,545 15,770 19,090 31,540 36,271 38,180 72,542 145,084 181,355 362,710 and 725,420, with no remainder.
Since 725,420 cannot be divided by just 1 and 725,420, it is not a prime number.