25423531232 has 24 divisors (see below), whose sum is σ = 54602812152. Its totient is φ = 11556150400.

The previous prime is 25423531201. The next prime is 25423531247. The reversal of 25423531232 is 23213532452.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36112619 + ... + 36113322.

It is an arithmetic number, because the mean of its divisors is an integer number (2275117173).

Almost surely, 2^25423531232 is an apocalyptic number.

25423531232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25423531232 is an abundant number, since it is smaller than the sum of its proper divisors (29179280920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25423531232 is a wasteful number, since it uses less digits than its factorization.

25423531232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72225962 (or 72225954 counting only the distinct ones).

The product of its digits is 43200, while the sum is 32.

It can be divided in two parts, 25423 and 531232, that added together give a palindrome (556655).

The spelling of 25423531232 in words is "twenty-five billion, four hundred twenty-three million, five hundred thirty-one thousand, two hundred thirty-two".