2585374856 has 32 divisors (see below), whose sum is σ = 4923504000. Its totient is φ = 1272538176.

The previous prime is 2585374849. The next prime is 2585374861. The reversal of 2585374856 is 6584735852.

It is a junction number, because it is equal to n+sod(n) for n = 2585374798 and 2585374807.

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, 213410 + ... + 225198.

It is an arithmetic number, because the mean of its divisors is an integer number (153859500).

Almost surely, 2^2585374856 is an apocalyptic number.

It is an amenable number.

2585374856 is a deficient number, since it is larger than the sum of its proper divisors (2338129144).

2585374856 is a wasteful number, since it uses less digits than its factorization.

2585374856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12221 (or 12217 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 53.

The square root of 2585374856 is about 50846.5815566789. The cubic root of 2585374856 is about 1372.4857380765.

The spelling of 2585374856 in words is "two billion, five hundred eighty-five million, three hundred seventy-four thousand, eight hundred fifty-six".