25364565432 has 96 divisors (see below), whose sum is σ = 72832032000. Its totient is φ = 7952178240.

The previous prime is 25364565407. The next prime is 25364565461. The reversal of 25364565432 is 23456546352.

25364565432 is a `hidden beast` number, since 2 + 53 + 6 + 4 + 56 + 543 + 2 = 666.

It is a super-2 number, since 2×25364565432² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123457 + ... + 256847.

It is an arithmetic number, because the mean of its divisors is an integer number (758667000).

Almost surely, 2^25364565432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25364565432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36416016000).

25364565432 is an abundant number, since it is smaller than the sum of its proper divisors (47467466568).

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

25364565432 is a wasteful number, since it uses less digits than its factorization.

25364565432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133561 (or 133554 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 45.

The spelling of 25364565432 in words is "twenty-five billion, three hundred sixty-four million, five hundred sixty-five thousand, four hundred thirty-two".