125121632 has 24 divisors (see below), whose sum is σ = 260824536. Its totient is φ = 58880512.

The previous prime is 125121599. The next prime is 125121643. The reversal of 125121632 is 236121521.

It is a junction number, because it is equal to n+sod(n) for n = 125121598 and 125121607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114458 + ... + 115545.

It is an arithmetic number, because the mean of its divisors is an integer number (10867689).

Almost surely, 2^125121632 is an apocalyptic number.

It is an amenable number.

125121632 is an abundant number, since it is smaller than the sum of its proper divisors (135702904).

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

125121632 is a wasteful number, since it uses less digits than its factorization.

125121632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230030 (or 230022 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 125121632 is about 11185.7781133008. The cubic root of 125121632 is about 500.1621234263.

The spelling of 125121632 in words is "one hundred twenty-five million, one hundred twenty-one thousand, six hundred thirty-two".