125889728 has 14 divisors (see below), whose sum is σ = 249812556. Its totient is φ = 62944832.

The previous prime is 125889713. The next prime is 125889779. The reversal of 125889728 is 827988521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983450 + ... + 983577.

It is an arithmetic number, because the mean of its divisors is an integer number (17843754).

Almost surely, 2^125889728 is an apocalyptic number.

It is an amenable number.

125889728 is a deficient number, since it is larger than the sum of its proper divisors (123922828).

125889728 is an equidigital number, since it uses as much as digits as its factorization.

125889728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967039 (or 1967029 counting only the distinct ones).

The product of its digits is 645120, while the sum is 50.

The square root of 125889728 is about 11220.0591798796. The cubic root of 125889728 is about 501.1835004431.

The spelling of 125889728 in words is "one hundred twenty-five million, eight hundred eighty-nine thousand, seven hundred twenty-eight".