125599271808 has 64 divisors (see below), whose sum is σ = 333679046400. Its totient is φ = 41859399168.

The previous prime is 125599271761. The next prime is 125599271827. The reversal of 125599271808 is 808172995521.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 2588313 + ... + 2636391.

It is an arithmetic number, because the mean of its divisors is an integer number (5213735100).

Almost surely, 2^125599271808 is an apocalyptic number.

It is an amenable number.

125599271808 is an abundant number, since it is smaller than the sum of its proper divisors (208079774592).

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

125599271808 is an equidigital number, since it uses as much as digits as its factorization.

125599271808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54899 (or 54887 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 57.

The spelling of 125599271808 in words is "one hundred twenty-five billion, five hundred ninety-nine million, two hundred seventy-one thousand, eight hundred eight".