2256788845 has 16 divisors (see below), whose sum is σ = 2966330160. Its totient is φ = 1640633344.

The previous prime is 2256788797. The next prime is 2256788867. The reversal of 2256788845 is 5488876522.

It can be written as a sum of positive squares in 8 ways, for example, as 43744996 + 2213043849 = 6614^2 + 47043^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256788845 - 2⁹ = 2256788333 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 455302 + ... + 460231.

It is an arithmetic number, because the mean of its divisors is an integer number (185395635).

Almost surely, 2^2256788845 is an apocalyptic number.

It is an amenable number.

2256788845 is a deficient number, since it is larger than the sum of its proper divisors (709541315).

2256788845 is a wasteful number, since it uses less digits than its factorization.

2256788845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915584.

The product of its digits is 8601600, while the sum is 55.

The square root of 2256788845 is about 47505.6717140175. The cubic root of 2256788845 is about 1311.6872854637.

The spelling of 2256788845 in words is "two billion, two hundred fifty-six million, seven hundred eighty-eight thousand, eight hundred forty-five".