125015820 has 48 divisors (see below), whose sum is σ = 368471040. Its totient is φ = 31582656.

The previous prime is 125015809. The next prime is 125015861. The reversal of 125015820 is 28510521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53692 + ... + 55971.

It is an arithmetic number, because the mean of its divisors is an integer number (7676480).

Almost surely, 2^125015820 is an apocalyptic number.

125015820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125015820 is an abundant number, since it is smaller than the sum of its proper divisors (243455220).

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

125015820 is a wasteful number, since it uses less digits than its factorization.

125015820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109694 (or 109692 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 125015820 is about 11181.0473570234. The cubic root of 125015820 is about 500.0210924435.

The spelling of 125015820 in words is "one hundred twenty-five million, fifteen thousand, eight hundred twenty".