Divisor 25811

To determine if any number is divisible by 25811, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 53 and 487 - then it is divisible by 25811.

The following tests must pass:

• Test if a number is divisible by 53
• Test if a number is divisible by 487

Easy!