125686619522 has 16 divisors (see below), whose sum is σ = 201171089760. Its totient is φ = 58720207392.

The previous prime is 125686619489. The next prime is 125686619557. The reversal of 125686619522 is 225916686521.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22651628 + ... + 22657175.

It is an arithmetic number, because the mean of its divisors is an integer number (12573193110).

Almost surely, 2^125686619522 is an apocalyptic number.

125686619522 is a deficient number, since it is larger than the sum of its proper divisors (75484470238).

125686619522 is a wasteful number, since it uses less digits than its factorization.

125686619522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45308897.

The product of its digits is 3110400, while the sum is 53.

The spelling of 125686619522 in words is "one hundred twenty-five billion, six hundred eighty-six million, six hundred nineteen thousand, five hundred twenty-two".