225724226531 has 16 divisors (see below), whose sum is σ = 243406880640. Its totient is φ = 208633138560.

The previous prime is 225724226513. The next prime is 225724226549. The reversal of 225724226531 is 135622427522.

It is an interprime number because it is at equal distance from previous prime (225724226513) and next prime (225724226549).

It is a cyclic number.

It is not a de Polignac number, because 225724226531 - 2²² = 225720032227 is a prime.

It is a super-2 number, since 2×225724226531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225724226501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562976 + ... + 876578.

It is an arithmetic number, because the mean of its divisors is an integer number (15212930040).

Almost surely, 2^225724226531 is an apocalyptic number.

225724226531 is a deficient number, since it is larger than the sum of its proper divisors (17682654109).

225724226531 is a wasteful number, since it uses less digits than its factorization.

225724226531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314546.

The product of its digits is 403200, while the sum is 41.

The spelling of 225724226531 in words is "two hundred twenty-five billion, seven hundred twenty-four million, two hundred twenty-six thousand, five hundred thirty-one".