125815557885 has 16 divisors (see below), whose sum is σ = 203730254784. Its totient is φ = 66293176832.

The previous prime is 125815557853. The next prime is 125815557899. The reversal of 125815557885 is 588755518521.

It is a cyclic number.

It is not a de Polignac number, because 125815557885 - 2⁵ = 125815557853 is a prime.

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, 50527092 + ... + 50529581.

It is an arithmetic number, because the mean of its divisors is an integer number (12733140924).

Almost surely, 2^125815557885 is an apocalyptic number.

125815557885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125815557885 is a deficient number, since it is larger than the sum of its proper divisors (77914696899).

125815557885 is a wasteful number, since it uses less digits than its factorization.

125815557885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101056764.

The product of its digits is 22400000, while the sum is 60.

The spelling of 125815557885 in words is "one hundred twenty-five billion, eight hundred fifteen million, five hundred fifty-seven thousand, eight hundred eighty-five".