125515560 has 32 divisors (see below), whose sum is σ = 376547040. Its totient is φ = 33470784.

The previous prime is 125515553. The next prime is 125515561. The reversal of 125515560 is 65515521.

It is a super-2 number, since 2×125515560² = 31508311604227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (125515561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522862 + ... + 523101.

It is an arithmetic number, because the mean of its divisors is an integer number (11767095).

Almost surely, 2^125515560 is an apocalyptic number.

125515560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125515560 is an abundant number, since it is smaller than the sum of its proper divisors (251031480).

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

125515560 is a wasteful number, since it uses less digits than its factorization.

125515560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045977 (or 1045973 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 125515560 is about 11203.3727064666. The cubic root of 125515560 is about 500.6864704187.

The spelling of 125515560 in words is "one hundred twenty-five million, five hundred fifteen thousand, five hundred sixty".