25536945020 has 48 divisors (see below), whose sum is σ = 55381874688. Its totient is φ = 9880918080.

The previous prime is 25536945017. The next prime is 25536945047. The reversal of 25536945020 is 2054963552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1643327 + ... + 1658793.

It is an arithmetic number, because the mean of its divisors is an integer number (1153789056).

Almost surely, 2^25536945020 is an apocalyptic number.

25536945020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25536945020 is an abundant number, since it is smaller than the sum of its proper divisors (29844929668).

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

25536945020 is a wasteful number, since it uses less digits than its factorization.

25536945020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18170 (or 18168 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 25536945020 in words is "twenty-five billion, five hundred thirty-six million, nine hundred forty-five thousand, twenty".