25865787112 has 32 divisors (see below), whose sum is σ = 54032987520. Its totient is φ = 11507021440.

The previous prime is 25865787083. The next prime is 25865787127. The reversal of 25865787112 is 21178756852.

It is a self number, because there is not a number n which added to its sum of digits gives 25865787112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122773 + ... + 3131044.

It is an arithmetic number, because the mean of its divisors is an integer number (1688530860).

Almost surely, 2^25865787112 is an apocalyptic number.

25865787112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25865787112 is an abundant number, since it is smaller than the sum of its proper divisors (28167200408).

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

25865787112 is a wasteful number, since it uses less digits than its factorization.

25865787112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6253881 (or 6253877 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 52.

The spelling of 25865787112 in words is "twenty-five billion, eight hundred sixty-five million, seven hundred eighty-seven thousand, one hundred twelve".