125831264647 has 12 divisors (see below), whose sum is σ = 138502859040. Its totient is φ = 114232880960.

The previous prime is 125831264591. The next prime is 125831264651. The reversal of 125831264647 is 746462138521.

It is not a de Polignac number, because 125831264647 - 2¹⁹ = 125830740359 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 125831264647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125831214647) 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 11 ways as a sum of consecutive naturals, for example, 636178 + ... + 810175.

It is an arithmetic number, because the mean of its divisors is an integer number (11541904920).

Almost surely, 2^125831264647 is an apocalyptic number.

125831264647 is a deficient number, since it is larger than the sum of its proper divisors (12671594393).

125831264647 is a wasteful number, since it uses less digits than its factorization.

125831264647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447094 (or 1447083 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The spelling of 125831264647 in words is "one hundred twenty-five billion, eight hundred thirty-one million, two hundred sixty-four thousand, six hundred forty-seven".