2585358816 has 48 divisors (see below), whose sum is σ = 7020594000. Its totient is φ = 832068608.

The previous prime is 2585358799. The next prime is 2585358817. The reversal of 2585358816 is 6188535852.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585358817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461541 + ... + 467108.

It is an arithmetic number, because the mean of its divisors is an integer number (146262375).

Almost surely, 2^2585358816 is an apocalyptic number.

It is an amenable number.

2585358816 is an abundant number, since it is smaller than the sum of its proper divisors (4435235184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2585358816 is a wasteful number, since it uses less digits than its factorization.

2585358816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928691 (or 928683 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 51.

The square root of 2585358816 is about 50846.4238270500. The cubic root of 2585358816 is about 1372.4828997110.

The spelling of 2585358816 in words is "two billion, five hundred eighty-five million, three hundred fifty-eight thousand, eight hundred sixteen".