2560749650 has 24 divisors (see below), whose sum is σ = 4891727460. Its totient is φ = 996615360.

The previous prime is 2560749649. The next prime is 2560749671. The reversal of 2560749650 is 569470652.

It can be written as a sum of positive squares in 6 ways, for example, as 610732369 + 1950017281 = 24713^2 + 44159^2 .

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 11 ways as a sum of consecutive naturals, for example, 690245 + ... + 693944.

Almost surely, 2^2560749650 is an apocalyptic number.

2560749650 is a deficient number, since it is larger than the sum of its proper divisors (2330977810).

2560749650 is a wasteful number, since it uses less digits than its factorization.

2560749650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384238 (or 1384233 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 2560749650 is about 50603.8501499639. The cubic root of 2560749650 is about 1368.1142738375.

It can be divided in two parts, 25607 and 49650, that added together give a palindrome (75257).

The spelling of 2560749650 in words is "two billion, five hundred sixty million, seven hundred forty-nine thousand, six hundred fifty".