25537535492 has 24 divisors (see below), whose sum is σ = 51552414144. Its totient is φ = 10842370272.

The previous prime is 25537535483. The next prime is 25537535557. The reversal of 25537535492 is 29453573552.

It is a self number, because there is not a number n which added to its sum of digits gives 25537535492.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4258943 + ... + 4264934.

It is an arithmetic number, because the mean of its divisors is an integer number (2148017256).

Almost surely, 2^25537535492 is an apocalyptic number.

It is an amenable number.

25537535492 is an abundant number, since it is smaller than the sum of its proper divisors (26014878652).

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

25537535492 is a wasteful number, since it uses less digits than its factorization.

25537535492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523995 (or 8523993 counting only the distinct ones).

The product of its digits is 5670000, while the sum is 50.

The spelling of 25537535492 in words is "twenty-five billion, five hundred thirty-seven million, five hundred thirty-five thousand, four hundred ninety-two".