855125521558 has 32 divisors (see below), whose sum is σ = 1638200567808. Its totient is φ = 325039790400.

The previous prime is 855125521489. The next prime is 855125521567.

855125521558 is nontrivially palindromic in base 10.

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, 67710310 + ... + 67722937.

It is an arithmetic number, because the mean of its divisors is an integer number (51193767744).

Almost surely, 2^855125521558 is an apocalyptic number.

855125521558 is a deficient number, since it is larger than the sum of its proper divisors (783075046250).

855125521558 is a wasteful number, since it uses less digits than its factorization.

855125521558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135433308.

The product of its digits is 4000000, while the sum is 52.

The spelling of 855125521558 in words is "eight hundred fifty-five billion, one hundred twenty-five million, five hundred twenty-one thousand, five hundred fifty-eight".