2580816256 has 32 divisors (see below), whose sum is σ = 5318769600. Its totient is φ = 1245909504.

The previous prime is 2580816253. The next prime is 2580816283. The reversal of 2580816256 is 6526180852.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×2580816256² = 13321225094467715072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580816253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343920 + ... + 351343.

It is an arithmetic number, because the mean of its divisors is an integer number (166211550).

Almost surely, 2^2580816256 is an apocalyptic number.

It is an amenable number.

2580816256 is an abundant number, since it is smaller than the sum of its proper divisors (2737953344).

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

2580816256 is an equidigital number, since it uses as much as digits as its factorization.

2580816256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695306 (or 695294 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 2580816256 is about 50801.7347735291. The cubic root of 2580816256 is about 1371.6785960159.

The spelling of 2580816256 in words is "two billion, five hundred eighty million, eight hundred sixteen thousand, two hundred fifty-six".