125036665 has 16 divisors (see below), whose sum is σ = 161891856. Its totient is φ = 92160000.

The previous prime is 125036633. The next prime is 125036677. The reversal of 125036665 is 566630521.

It can be written as a sum of positive squares in 8 ways, for example, as 21904 + 125014761 = 148^2 + 11181^2 .

It is not a de Polignac number, because 125036665 - 2⁵ = 125036633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125036665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40165 + ... + 43165.

It is an arithmetic number, because the mean of its divisors is an integer number (10118241).

Almost surely, 2^125036665 is an apocalyptic number.

It is an amenable number.

125036665 is a deficient number, since it is larger than the sum of its proper divisors (36855191).

125036665 is a wasteful number, since it uses less digits than its factorization.

125036665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 125036665 is about 11181.9794759246. The cubic root of 125036665 is about 500.0488818876.

The spelling of 125036665 in words is "one hundred twenty-five million, thirty-six thousand, six hundred sixty-five".