125518806879 has 16 divisors (see below), whose sum is σ = 169276353792. Its totient is φ = 82723051008.

The previous prime is 125518806877. The next prime is 125518806887. The reversal of 125518806879 is 978608815521.

It is not a de Polignac number, because 125518806879 - 2¹ = 125518806877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125518806877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173709 + ... + 530294.

It is an arithmetic number, because the mean of its divisors is an integer number (10579772112).

Almost surely, 2^125518806879 is an apocalyptic number.

125518806879 is a deficient number, since it is larger than the sum of its proper divisors (43757546913).

125518806879 is a wasteful number, since it uses less digits than its factorization.

125518806879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704686.

The product of its (nonzero) digits is 9676800, while the sum is 60.

The spelling of 125518806879 in words is "one hundred twenty-five billion, five hundred eighteen million, eight hundred six thousand, eight hundred seventy-nine".