125518875554 has 16 divisors (see below), whose sum is σ = 195814608000. Its totient is φ = 60290281584.

The previous prime is 125518875529. The next prime is 125518875583. The reversal of 125518875554 is 455578815521.

It is a self number, because there is not a number n which added to its sum of digits gives 125518875554.

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, 10729604 + ... + 10741295.

It is an arithmetic number, because the mean of its divisors is an integer number (12238413000).

Almost surely, 2^125518875554 is an apocalyptic number.

125518875554 is a deficient number, since it is larger than the sum of its proper divisors (70295732446).

125518875554 is a wasteful number, since it uses less digits than its factorization.

125518875554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21471017.

The product of its digits is 11200000, while the sum is 56.

The spelling of 125518875554 in words is "one hundred twenty-five billion, five hundred eighteen million, eight hundred seventy-five thousand, five hundred fifty-four".