2560749256 has 32 divisors (see below), whose sum is σ = 5255523000. Its totient is φ = 1162506240.

The previous prime is 2560749239. The next prime is 2560749281. The reversal of 2560749256 is 6529470652.

It can be written as a sum of positive squares in 4 ways, for example, as 1744732900 + 816016356 = 41770^2 + 28566^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195481 + ... + 208168.

Almost surely, 2^2560749256 is an apocalyptic number.

2560749256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2560749256 is an abundant number, since it is smaller than the sum of its proper divisors (2694773744).

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

2560749256 is a wasteful number, since it uses less digits than its factorization.

2560749256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403729 (or 403725 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The square root of 2560749256 is about 50603.8462569793. The cubic root of 2560749256 is about 1368.1142036710.

The spelling of 2560749256 in words is "two billion, five hundred sixty million, seven hundred forty-nine thousand, two hundred fifty-six".