2585722864 has 10 divisors (see below), whose sum is σ = 5009838080. Its totient is φ = 1292861424.

The previous prime is 2585722829. The next prime is 2585722871. The reversal of 2585722864 is 4682275852.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80803824 + ... + 80803855.

It is an arithmetic number, because the mean of its divisors is an integer number (500983808).

Almost surely, 2^2585722864 is an apocalyptic number.

It is an amenable number.

2585722864 is a deficient number, since it is larger than the sum of its proper divisors (2424115216).

2585722864 is a wasteful number, since it uses less digits than its factorization.

2585722864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161607687 (or 161607681 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 49.

The square root of 2585722864 is about 50850.0035791542. The cubic root of 2585722864 is about 1372.5473171013.

The spelling of 2585722864 in words is "two billion, five hundred eighty-five million, seven hundred twenty-two thousand, eight hundred sixty-four".