256222 has 4 divisors (see below), whose sum is σ = 384336. Its totient is φ = 128110.

The previous prime is 256219. The next prime is 256279. The reversal of 256222 is 222652.

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

It is a self number, because there is not a number n which added to its sum of digits gives 256222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64054 + ... + 64057.

It is an arithmetic number, because the mean of its divisors is an integer number (96084).

2²⁵⁶²²² is an apocalyptic number.

256222 is a deficient number, since it is larger than the sum of its proper divisors (128114).

256222 is a wasteful number, since it uses less digits than its factorization.

256222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128113.

The product of its digits is 480, while the sum is 19.

The square root of 256222 is about 506.1837610987. The cubic root of 256222 is about 63.5143911004.

Adding to 256222 its reverse (222652), we get a palindrome (478874).

The spelling of 256222 in words is "two hundred fifty-six thousand, two hundred twenty-two".