125640775 has 12 divisors (see below), whose sum is σ = 167779192. Its totient is φ = 92780640.

The previous prime is 125640763. The next prime is 125640817. The reversal of 125640775 is 577046521.

It is not a de Polignac number, because 125640775 - 2²³ = 117252167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192969 + ... + 193618.

Almost surely, 2^125640775 is an apocalyptic number.

125640775 is a deficient number, since it is larger than the sum of its proper divisors (42138417).

125640775 is a wasteful number, since it uses less digits than its factorization.

125640775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386610 (or 386605 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 125640775 is about 11208.9595859741. The cubic root of 125640775 is about 500.8529109253.

The spelling of 125640775 in words is "one hundred twenty-five million, six hundred forty thousand, seven hundred seventy-five".