125909994264 has 24 divisors (see below), whose sum is σ = 314779331580. Its totient is φ = 41969418640.

The previous prime is 125909994253. The next prime is 125909994313. The reversal of 125909994264 is 462499909521.

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

It is a junction number, because it is equal to n+sod(n) for n = 125909994198 and 125909994207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1702129 + ... + 1774559.

Almost surely, 2^125909994264 is an apocalyptic number.

It is an amenable number.

125909994264 is an abundant number, since it is smaller than the sum of its proper divisors (188869337316).

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

125909994264 is an frugal number, since it uses more digits than its factorization.

125909994264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144871 (or 72436 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 60.

The spelling of 125909994264 in words is "one hundred twenty-five billion, nine hundred nine million, nine hundred ninety-four thousand, two hundred sixty-four".