125668257 has 16 divisors (see below), whose sum is σ = 196851648. Its totient is φ = 70303680.

The previous prime is 125668241. The next prime is 125668307. The reversal of 125668257 is 752866521.

It is not a de Polignac number, because 125668257 - 2⁴ = 125668241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125668217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146038 + ... + 146895.

It is an arithmetic number, because the mean of its divisors is an integer number (12303228).

Almost surely, 2^125668257 is an apocalyptic number.

It is an amenable number.

125668257 is a deficient number, since it is larger than the sum of its proper divisors (71183391).

125668257 is a wasteful number, since it uses less digits than its factorization.

125668257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292960.

The product of its digits is 201600, while the sum is 42.

The square root of 125668257 is about 11210.1854132748. The cubic root of 125668257 is about 500.8894262371.

The spelling of 125668257 in words is "one hundred twenty-five million, six hundred sixty-eight thousand, two hundred fifty-seven".