25285835580 has 96 divisors (see below), whose sum is σ = 71168606208. Its totient is φ = 6707904000.

The previous prime is 25285835579. The next prime is 25285835621. The reversal of 25285835580 is 8553858252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19405209 + ... + 19406511.

It is an arithmetic number, because the mean of its divisors is an integer number (741339648).

Almost surely, 2^25285835580 is an apocalyptic number.

25285835580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25285835580 is an abundant number, since it is smaller than the sum of its proper divisors (45882770628).

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

25285835580 is a wasteful number, since it uses less digits than its factorization.

25285835580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 3840000, while the sum is 51.

The spelling of 25285835580 in words is "twenty-five billion, two hundred eighty-five million, eight hundred thirty-five thousand, five hundred eighty".