25869524880 has 80 divisors (see below), whose sum is σ = 80235936000. Its totient is φ = 6895064064.

The previous prime is 25869524819. The next prime is 25869524887. The reversal of 25869524880 is 8842596852.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 25869524880.

It is not an unprimeable number, because it can be changed into a prime (25869524887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468996 + ... + 521244.

It is an arithmetic number, because the mean of its divisors is an integer number (1002949200).

Almost surely, 2^25869524880 is an apocalyptic number.

25869524880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25869524880 is an abundant number, since it is smaller than the sum of its proper divisors (54366411120).

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

25869524880 is a wasteful number, since it uses less digits than its factorization.

25869524880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54328 (or 54322 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 57.

The spelling of 25869524880 in words is "twenty-five billion, eight hundred sixty-nine million, five hundred twenty-four thousand, eight hundred eighty".