25540512204 has 24 divisors (see below), whose sum is σ = 60433890048. Its totient is φ = 8393595280.

The previous prime is 25540512197. The next prime is 25540512229. The reversal of 25540512204 is 40221504552.

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, 14987712 + ... + 14989415.

It is an arithmetic number, because the mean of its divisors is an integer number (2518078752).

Almost surely, 2^25540512204 is an apocalyptic number.

It is an amenable number.

25540512204 is an abundant number, since it is smaller than the sum of its proper divisors (34893377844).

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

25540512204 is a wasteful number, since it uses less digits than its factorization.

25540512204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29977205 (or 29977203 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 25540512204 in words is "twenty-five billion, five hundred forty million, five hundred twelve thousand, two hundred four".