125839299972 has 12 divisors (see below), whose sum is σ = 293625033296. Its totient is φ = 41946433320.

The previous prime is 125839299961. The next prime is 125839299977. The reversal of 125839299972 is 279992938521.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (125839299977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5243304154 + ... + 5243304177.

Almost surely, 2^125839299972 is an apocalyptic number.

125839299972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125839299972 is an abundant number, since it is smaller than the sum of its proper divisors (167785733324).

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

125839299972 is a wasteful number, since it uses less digits than its factorization.

125839299972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486608338 (or 10486608336 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 66.

The spelling of 125839299972 in words is "one hundred twenty-five billion, eight hundred thirty-nine million, two hundred ninety-nine thousand, nine hundred seventy-two".