256222290963 has 4 divisors (see below), whose sum is σ = 341629721288. Its totient is φ = 170814860640.

The previous prime is 256222290853. The next prime is 256222290967. The reversal of 256222290963 is 369092222652.

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

It is not a de Polignac number, because 256222290963 - 2²⁶ = 256155182099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256222290967) 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 in 3 ways as a sum of consecutive naturals, for example, 42703715158 + ... + 42703715163.

It is an arithmetic number, because the mean of its divisors is an integer number (85407430322).

Almost surely, 2^256222290963 is an apocalyptic number.

256222290963 is a deficient number, since it is larger than the sum of its proper divisors (85407430325).

256222290963 is an equidigital number, since it uses as much as digits as its factorization.

256222290963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85407430324.

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 256222290963 in words is "two hundred fifty-six billion, two hundred twenty-two million, two hundred ninety thousand, nine hundred sixty-three".