855425566 has 8 divisors (see below), whose sum is σ = 1283288904. Its totient is φ = 427662600.

The previous prime is 855425497. The next prime is 855425587. The reversal of 855425566 is 665524558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116 + ... + 41416.

It is an arithmetic number, because the mean of its divisors is an integer number (160411113).

Almost surely, 2^855425566 is an apocalyptic number.

855425566 is a deficient number, since it is larger than the sum of its proper divisors (427863338).

855425566 is a wasteful number, since it uses less digits than its factorization.

855425566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50186.

The product of its digits is 1440000, while the sum is 46.

The square root of 855425566 is about 29247.6591541956. The cubic root of 855425566 is about 949.2794410487.

The spelling of 855425566 in words is "eight hundred fifty-five million, four hundred twenty-five thousand, five hundred sixty-six".