125639160656 has 10 divisors (see below), whose sum is σ = 243425873802. Its totient is φ = 62819580320.

The previous prime is 125639160613. The next prime is 125639160659. The reversal of 125639160656 is 656061936521.

It can be written as a sum of positive squares in only one way, i.e., 100478856256 + 25160304400 = 316984^2 + 158620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125639160659) 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 as a sum of consecutive naturals, namely, 3926223755 + ... + 3926223786.

Almost surely, 2^125639160656 is an apocalyptic number.

125639160656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125639160656 is a deficient number, since it is larger than the sum of its proper divisors (117786713146).

125639160656 is an equidigital number, since it uses as much as digits as its factorization.

125639160656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852447549 (or 7852447543 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 125639160656 in words is "one hundred twenty-five billion, six hundred thirty-nine million, one hundred sixty thousand, six hundred fifty-six".