125318728 has 8 divisors (see below), whose sum is σ = 234972630. Its totient is φ = 62659360.

The previous prime is 125318723. The next prime is 125318731. The reversal of 125318728 is 827813521.

It can be written as a sum of positive squares in only one way, i.e., 121925764 + 3392964 = 11042^2 + 1842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (125318723) 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 as a sum of consecutive naturals, namely, 7832413 + ... + 7832428.

Almost surely, 2^125318728 is an apocalyptic number.

It is an amenable number.

125318728 is a deficient number, since it is larger than the sum of its proper divisors (109653902).

125318728 is a wasteful number, since it uses less digits than its factorization.

125318728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15664847 (or 15664843 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 125318728 is about 11194.5847622857. The cubic root of 125318728 is about 500.4246099773.

The spelling of 125318728 in words is "one hundred twenty-five million, three hundred eighteen thousand, seven hundred twenty-eight".