125122404615 has 16 divisors (see below), whose sum is σ = 215595528288. Its totient is φ = 61598722176.

The previous prime is 125122404577. The next prime is 125122404637. The reversal of 125122404615 is 516404221521.

It is a happy number.

It is not a de Polignac number, because 125122404615 - 2⁸ = 125122404359 is a prime.

It is a super-2 number, since 2×125122404615² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320826484 + ... + 320826873.

It is an arithmetic number, because the mean of its divisors is an integer number (13474720518).

Almost surely, 2^125122404615 is an apocalyptic number.

125122404615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125122404615 is a deficient number, since it is larger than the sum of its proper divisors (90473123673).

125122404615 is a wasteful number, since it uses less digits than its factorization.

125122404615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641653378.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 125122404615 in words is "one hundred twenty-five billion, one hundred twenty-two million, four hundred four thousand, six hundred fifteen".