125717864 has 8 divisors (see below), whose sum is σ = 235721010. Its totient is φ = 62858928.

The previous prime is 125717863. The next prime is 125717881. The reversal of 125717864 is 468717521.

It can be written as a sum of positive squares in only one way, i.e., 87796900 + 37920964 = 9370^2 + 6158^2 .

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

It is not an unprimeable number, because it can be changed into a prime (125717863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7857359 + ... + 7857374.

Almost surely, 2^125717864 is an apocalyptic number.

It is an amenable number.

125717864 is a deficient number, since it is larger than the sum of its proper divisors (110003146).

125717864 is a wasteful number, since it uses less digits than its factorization.

125717864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15714739 (or 15714735 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 125717864 is about 11212.3977810279. The cubic root of 125717864 is about 500.9553255437.

The spelling of 125717864 in words is "one hundred twenty-five million, seven hundred seventeen thousand, eight hundred sixty-four".