Divisor 25721

To determine if any number is divisible by 25721, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 289 and 89 - then it is divisible by 25721.

The following tests must pass:

• Test if a number is divisible by 289
• Test if a number is divisible by 89

Easy!