25861348872 has 96 divisors (see below), whose sum is σ = 76908031200. Its totient is φ = 8113353984.

The previous prime is 25861348841. The next prime is 25861348897. The reversal of 25861348872 is 27884316852.

25861348872 is a `hidden beast` number, since 2 + 5 + 86 + 13 + 488 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 358222 + ... + 424317.

It is an arithmetic number, because the mean of its divisors is an integer number (801125325).

Almost surely, 2^25861348872 is an apocalyptic number.

It is an amenable number.

25861348872 is an abundant number, since it is smaller than the sum of its proper divisors (51046682328).

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

25861348872 is a wasteful number, since it uses less digits than its factorization.

25861348872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782577 (or 782561 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The spelling of 25861348872 in words is "twenty-five billion, eight hundred sixty-one million, three hundred forty-eight thousand, eight hundred seventy-two".