125665713 has 6 divisors (see below), whose sum is σ = 181517154. Its totient is φ = 83777136.

The previous prime is 125665711. The next prime is 125665763. The reversal of 125665713 is 317566521.

125665713 is a `hidden beast` number, since 1 + 25 + 66 + 571 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 65804544 + 59861169 = 8112^2 + 7737^2 .

It is not a de Polignac number, because 125665713 - 2¹ = 125665711 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125665711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6981420 + ... + 6981437.

It is an arithmetic number, because the mean of its divisors is an integer number (30252859).

Almost surely, 2^125665713 is an apocalyptic number.

It is an amenable number.

125665713 is a deficient number, since it is larger than the sum of its proper divisors (55851441).

125665713 is a wasteful number, since it uses less digits than its factorization.

125665713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13962863 (or 13962860 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 125665713 is about 11210.0719444614. The cubic root of 125665713 is about 500.8860462499.

The spelling of 125665713 in words is "one hundred twenty-five million, six hundred sixty-five thousand, seven hundred thirteen".