125816856 has 32 divisors (see below), whose sum is σ = 343137600. Its totient is φ = 38126240.

The previous prime is 125816849. The next prime is 125816861. The reversal of 125816856 is 658618521.

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, 238026 + ... + 238553.

It is an arithmetic number, because the mean of its divisors is an integer number (10723050).

Almost surely, 2^125816856 is an apocalyptic number.

It is an amenable number.

125816856 is an abundant number, since it is smaller than the sum of its proper divisors (217320744).

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

125816856 is a wasteful number, since it uses less digits than its factorization.

125816856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476599 (or 476595 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The square root of 125816856 is about 11216.8113115983. The cubic root of 125816856 is about 501.0867774514.

The spelling of 125816856 in words is "one hundred twenty-five million, eight hundred sixteen thousand, eight hundred fifty-six".