2255786257 has 16 divisors (see below), whose sum is σ = 2417461200. Its totient is φ = 2100904960.

The previous prime is 2255786233. The next prime is 2255786311. The reversal of 2255786257 is 7526875522.

It can be written as a sum of positive squares in 8 ways, for example, as 5612161 + 2250174096 = 2369^2 + 47436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255786257 - 2³¹ = 108302609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2255786257.

It is not an unprimeable number, because it can be changed into a prime (2255786557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95163 + ... + 116479.

It is an arithmetic number, because the mean of its divisors is an integer number (151091325).

Almost surely, 2^2255786257 is an apocalyptic number.

It is an amenable number.

2255786257 is a deficient number, since it is larger than the sum of its proper divisors (161674943).

2255786257 is a wasteful number, since it uses less digits than its factorization.

2255786257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21476.

The product of its digits is 2352000, while the sum is 49.

The square root of 2255786257 is about 47495.1182438785. The cubic root of 2255786257 is about 1311.4930158157.

The spelling of 2255786257 in words is "two billion, two hundred fifty-five million, seven hundred eighty-six thousand, two hundred fifty-seven".