2585866488 has 96 divisors (see below), whose sum is σ = 6726343680. Its totient is φ = 828369600.

The previous prime is 2585866477. The next prime is 2585866499. The reversal of 2585866488 is 8846685852.

It is an interprime number because it is at equal distance from previous prime (2585866477) and next prime (2585866499).

It is a super-2 number, since 2×2585866488² = 13373410987522908288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4404931 + ... + 4405517.

It is an arithmetic number, because the mean of its divisors is an integer number (70066080).

Almost surely, 2^2585866488 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 2585866488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3363171840).

2585866488 is an abundant number, since it is smaller than the sum of its proper divisors (4140477192).

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

2585866488 is a wasteful number, since it uses less digits than its factorization.

2585866488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 814 counting only the distinct ones).

The product of its digits is 29491200, while the sum is 60.

The square root of 2585866488 is about 50851.4157914998. The cubic root of 2585866488 is about 1372.5727293486.

The spelling of 2585866488 in words is "two billion, five hundred eighty-five million, eight hundred sixty-six thousand, four hundred eighty-eight".