25920000008 has 24 divisors (see below), whose sum is σ = 56534694750. Its totient is φ = 11108571264.

The previous prime is 25919999999. The next prime is 25920000019. The reversal of 25920000008 is 80000002952.

It can be written as a sum of positive squares in only one way, i.e., 19159542724 + 6760457284 = 138418^2 + 82222^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33060833 + ... + 33061616.

Almost surely, 2^25920000008 is an apocalyptic number.

25920000008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25920000008 is an abundant number, since it is smaller than the sum of its proper divisors (30614694742).

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

25920000008 is a wasteful number, since it uses less digits than its factorization.

25920000008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66122469 (or 66122458 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

It can be divided in two parts, 2592000000 and 8, that multiplied together give a square (20736000000 = 144000²).

The spelling of 25920000008 in words is "twenty-five billion, nine hundred twenty million, eight", and thus it is an aban number.