23131531244025 has 72 divisors (see below), whose sum is σ = 41653495427544. Its totient is φ = 12270643660800.

The previous prime is 23131531244011. The next prime is 23131531244069. The reversal of 23131531244025 is 52044213513132.

23131531244025 is a `hidden beast` number, since 2 + 3 + 1 + 315 + 312 + 4 + 4 + 0 + 25 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 1136481791481 + 21995049452544 = 1066059^2 + 4689888^2 .

It is not a de Polignac number, because 23131531244025 - 2⁴ = 23131531244009 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 156881137 + ... + 157028513.

It is an arithmetic number, because the mean of its divisors is an integer number (578520769827).

Almost surely, 2^{23131531244025} is an apocalyptic number.

23131531244025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23131531244025 is a deficient number, since it is larger than the sum of its proper divisors (18521964183519).

23131531244025 is a wasteful number, since it uses less digits than its factorization.

23131531244025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151131 (or 151123 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 23131531244025 its reverse (52044213513132), we get a palindrome (75175744757157).

The spelling of 23131531244025 in words is "twenty-three trillion, one hundred thirty-one billion, five hundred thirty-one million, two hundred forty-four thousand, twenty-five".