125691168 has 24 divisors (see below), whose sum is σ = 329939568. Its totient is φ = 41897024.

The previous prime is 125691161. The next prime is 125691169. The reversal of 125691168 is 861196521.

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

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (125691161) 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, 654546 + ... + 654737.

It is an arithmetic number, because the mean of its divisors is an integer number (13747482).

Almost surely, 2^125691168 is an apocalyptic number.

It is an amenable number.

125691168 is an abundant number, since it is smaller than the sum of its proper divisors (204248400).

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

125691168 is a wasteful number, since it uses less digits than its factorization.

125691168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309296 (or 1309288 counting only the distinct ones).

The product of its digits is 25920, while the sum is 39.

The square root of 125691168 is about 11211.2072498906. The cubic root of 125691168 is about 500.9198639960.

The spelling of 125691168 in words is "one hundred twenty-five million, six hundred ninety-one thousand, one hundred sixty-eight".