125706665 has 32 divisors (see below), whose sum is σ = 177321984. Its totient is φ = 83773440.

The previous prime is 125706613. The next prime is 125706689. The reversal of 125706665 is 566607521.

It is not a de Polignac number, because 125706665 - 2⁶ = 125706601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206792 + ... + 207398.

It is an arithmetic number, because the mean of its divisors is an integer number (5541312).

Almost surely, 2^125706665 is an apocalyptic number.

It is an amenable number.

125706665 is a deficient number, since it is larger than the sum of its proper divisors (51615319).

125706665 is an equidigital number, since it uses as much as digits as its factorization.

125706665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 125706665 is about 11211.8983673596. The cubic root of 125706665 is about 500.9404499986.

The spelling of 125706665 in words is "one hundred twenty-five million, seven hundred six thousand, six hundred sixty-five".