125521988 has 12 divisors (see below), whose sum is σ = 224772240. Its totient is φ = 61301352.

The previous prime is 125521987. The next prime is 125521997. The reversal of 125521988 is 889125521.

It is not an unprimeable number, because it can be changed into a prime (125521987) by changing a digit.

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, 364718 + ... + 365061.

It is an arithmetic number, because the mean of its divisors is an integer number (18731020).

Almost surely, 2^125521988 is an apocalyptic number.

It is an amenable number.

125521988 is a deficient number, since it is larger than the sum of its proper divisors (99250252).

125521988 is a wasteful number, since it uses less digits than its factorization.

125521988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729826 (or 729824 counting only the distinct ones).

The product of its digits is 57600, while the sum is 41.

The square root of 125521988 is about 11203.6595806906. The cubic root of 125521988 is about 500.6950174538.

The spelling of 125521988 in words is "one hundred twenty-five million, five hundred twenty-one thousand, nine hundred eighty-eight".