25829864568 has 24 divisors (see below), whose sum is σ = 69955883400. Its totient is φ = 8609954832.

The previous prime is 25829864561. The next prime is 25829864579. The reversal of 25829864568 is 86546892852.

25829864568 is a `hidden beast` number, since 2 + 5 + 8 + 2 + 9 + 8 + 64 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25829864561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179373988 + ... + 179374131.

It is an arithmetic number, because the mean of its divisors is an integer number (2914828475).

Almost surely, 2^25829864568 is an apocalyptic number.

It is an amenable number.

25829864568 is an abundant number, since it is smaller than the sum of its proper divisors (44126018832).

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

25829864568 is a wasteful number, since it uses less digits than its factorization.

25829864568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358748131 (or 358748124 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 63.

The spelling of 25829864568 in words is "twenty-five billion, eight hundred twenty-nine million, eight hundred sixty-four thousand, five hundred sixty-eight".