23190977525 has 6 divisors (see below), whose sum is σ = 28756812162. Its totient is φ = 18552782000.

The previous prime is 23190977521. The next prime is 23190977569. The reversal of 23190977525 is 52577909132.

It can be written as a sum of positive squares in 3 ways, for example, as 4211231236 + 18979746289 = 64894^2 + 137767^2 .

It is not a de Polignac number, because 23190977525 - 2² = 23190977521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23190977521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 463819526 + ... + 463819575.

It is an arithmetic number, because the mean of its divisors is an integer number (4792802027).

Almost surely, 2^23190977525 is an apocalyptic number.

23190977525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23190977525 is a deficient number, since it is larger than the sum of its proper divisors (5565834637).

23190977525 is an equidigital number, since it uses as much as digits as its factorization.

23190977525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927639111 (or 927639106 counting only the distinct ones).

The product of its (nonzero) digits is 1190700, while the sum is 50.

The spelling of 23190977525 in words is "twenty-three billion, one hundred ninety million, nine hundred seventy-seven thousand, five hundred twenty-five".