2568745549 has 2 divisors, whose sum is σ = 2568745550. Its totient is φ = 2568745548.

The previous prime is 2568745523. The next prime is 2568745559. The reversal of 2568745549 is 9455478652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1905322500 + 663423049 = 43650^2 + 25757^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568745549 - 2¹¹ = 2568743501 is a prime.

It is a super-2 number, since 2×2568745549² = 13196907391014622802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2568745549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2568745559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284372774 + 1284372775.

It is an arithmetic number, because the mean of its divisors is an integer number (1284372775).

Almost surely, 2^2568745549 is an apocalyptic number.

It is an amenable number.

2568745549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568745549 is an equidigital number, since it uses as much as digits as its factorization.

2568745549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096000, while the sum is 55.

The square root of 2568745549 is about 50682.7934214364. The cubic root of 2568745549 is about 1369.5367657931.

The spelling of 2568745549 in words is "two billion, five hundred sixty-eight million, seven hundred forty-five thousand, five hundred forty-nine".