125265639 has 16 divisors (see below), whose sum is σ = 179089920. Its totient is φ = 77600640.

The previous prime is 125265629. The next prime is 125265661. The reversal of 125265639 is 936562521.

It is not a de Polignac number, because 125265639 - 2⁵ = 125265607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125265597 and 125265606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125265629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11517 + ... + 19574.

It is an arithmetic number, because the mean of its divisors is an integer number (11193120).

Almost surely, 2^125265639 is an apocalyptic number.

125265639 is a deficient number, since it is larger than the sum of its proper divisors (53824281).

125265639 is a wasteful number, since it uses less digits than its factorization.

125265639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31190.

The product of its digits is 97200, while the sum is 39.

The square root of 125265639 is about 11192.2133199828. The cubic root of 125265639 is about 500.3539347346.

The spelling of 125265639 in words is "one hundred twenty-five million, two hundred sixty-five thousand, six hundred thirty-nine".