2585897964 has 72 divisors (see below), whose sum is σ = 7144541040. Its totient is φ = 783775872.

The previous prime is 2585897957. The next prime is 2585897969. The reversal of 2585897964 is 4697985852.

2585897964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2585897969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9879 + ... + 72590.

Almost surely, 2^2585897964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2585897964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3572270520).

2585897964 is an abundant number, since it is smaller than the sum of its proper divisors (4558643076).

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

2585897964 is a wasteful number, since it uses less digits than its factorization.

2585897964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82559 (or 82554 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The square root of 2585897964 is about 50851.7252804661. The cubic root of 2585897964 is about 1372.5782984585.

The spelling of 2585897964 in words is "two billion, five hundred eighty-five million, eight hundred ninety-seven thousand, nine hundred sixty-four".