2256994771 has 4 divisors (see below), whose sum is σ = 2299579632. Its totient is φ = 2214409912.

The previous prime is 2256994757. The next prime is 2256994777. The reversal of 2256994771 is 1774996522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2256994771 - 2¹⁵ = 2256962003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256994777) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21292351 + ... + 21292456.

It is an arithmetic number, because the mean of its divisors is an integer number (574894908).

Almost surely, 2^2256994771 is an apocalyptic number.

2256994771 is a deficient number, since it is larger than the sum of its proper divisors (42584861).

2256994771 is an equidigital number, since it uses as much as digits as its factorization.

2256994771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42584860.

The product of its digits is 1905120, while the sum is 52.

The square root of 2256994771 is about 47507.8390478877. The cubic root of 2256994771 is about 1311.7271802462.

It can be divided in two parts, 225 and 6994771, that added together give a palindrome (6994996).

The spelling of 2256994771 in words is "two billion, two hundred fifty-six million, nine hundred ninety-four thousand, seven hundred seventy-one".