25989467880 has 64 divisors (see below), whose sum is σ = 78136968960. Its totient is φ = 6915541248.

The previous prime is 25989467879. The next prime is 25989467929. The reversal of 25989467880 is 8876498952.

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, 178327 + ... + 289446.

It is an arithmetic number, because the mean of its divisors is an integer number (1220890140).

Almost surely, 2^25989467880 is an apocalyptic number.

25989467880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25989467880 is an abundant number, since it is smaller than the sum of its proper divisors (52147501080).

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

25989467880 is a wasteful number, since it uses less digits than its factorization.

25989467880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468250 (or 468246 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 25989467880 in words is "twenty-five billion, nine hundred eighty-nine million, four hundred sixty-seven thousand, eight hundred eighty".