125591564 has 12 divisors (see below), whose sum is σ = 251183184. Its totient is φ = 53824944.

The previous prime is 125591537. The next prime is 125591573. The reversal of 125591564 is 465195521.

125591564 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2242679 + ... + 2242734.

It is an arithmetic number, because the mean of its divisors is an integer number (20931932).

Almost surely, 2^125591564 is an apocalyptic number.

125591564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

125591564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

125591564 is a wasteful number, since it uses less digits than its factorization.

125591564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485424 (or 4485422 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 125591564 is about 11206.7642073883. The cubic root of 125591564 is about 500.7875110017.

The spelling of 125591564 in words is "one hundred twenty-five million, five hundred ninety-one thousand, five hundred sixty-four".