25880000188 has 24 divisors (see below), whose sum is σ = 51763525632. Its totient is φ = 11090673264.

The previous prime is 25880000161. The next prime is 25880000233. The reversal of 25880000188 is 88100008852.

It is a self number, because there is not a number n which added to its sum of digits gives 25880000188.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 633345 + ... + 672967.

It is an arithmetic number, because the mean of its divisors is an integer number (2156813568).

Almost surely, 2^25880000188 is an apocalyptic number.

25880000188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25880000188 is an abundant number, since it is smaller than the sum of its proper divisors (25883525444).

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

25880000188 is a wasteful number, since it uses less digits than its factorization.

25880000188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62961 (or 62959 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The spelling of 25880000188 in words is "twenty-five billion, eight hundred eighty million, one hundred eighty-eight", and thus it is an aban number.