125639160641 has 16 divisors (see below), whose sum is σ = 130517049600. Its totient is φ = 120880721808.

The previous prime is 125639160613. The next prime is 125639160659. The reversal of 125639160641 is 146061936521.

It is a cyclic number.

It is not a de Polignac number, because 125639160641 - 2²² = 125634966337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125639160592 and 125639160601.

It is not an unprimeable number, because it can be changed into a prime (125639163641) by changing a digit.

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, 404090 + ... + 643868.

It is an arithmetic number, because the mean of its divisors is an integer number (8157315600).

Almost surely, 2^125639160641 is an apocalyptic number.

It is an amenable number.

125639160641 is a deficient number, since it is larger than the sum of its proper divisors (4877888959).

125639160641 is a wasteful number, since it uses less digits than its factorization.

125639160641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240028.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 125639160641 in words is "one hundred twenty-five billion, six hundred thirty-nine million, one hundred sixty thousand, six hundred forty-one".