125517056 has 72 divisors (see below), whose sum is σ = 289920960. Its totient is φ = 53121024.

The previous prime is 125517037. The next prime is 125517083. The reversal of 125517056 is 650715521.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 159095 + ... + 159881.

It is an arithmetic number, because the mean of its divisors is an integer number (4026680).

Almost surely, 2^125517056 is an apocalyptic number.

125517056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125517056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144960480).

125517056 is an abundant number, since it is smaller than the sum of its proper divisors (164403904).

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

125517056 is an frugal number, since it uses more digits than its factorization.

125517056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 125517056 is about 11203.4394718765. The cubic root of 125517056 is about 500.6884596116.

The spelling of 125517056 in words is "one hundred twenty-five million, five hundred seventeen thousand, fifty-six".