255444222 has 32 divisors (see below), whose sum is σ = 558754560. Its totient is φ = 77209920.

The previous prime is 255444179. The next prime is 255444253. The reversal of 255444222 is 222444552.

It is a self number, because there is not a number n which added to its sum of digits gives 255444222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22263 + ... + 31725.

It is an arithmetic number, because the mean of its divisors is an integer number (17461080).

Almost surely, 2^255444222 is an apocalyptic number.

255444222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255444222 is an abundant number, since it is smaller than the sum of its proper divisors (303310338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255444222 is a wasteful number, since it uses less digits than its factorization.

255444222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888.

The product of its digits is 25600, while the sum is 30.

The square root of 255444222 is about 15982.6225007037. The cubic root of 255444222 is about 634.5005865139.

Adding to 255444222 its reverse (222444552), we get a palindrome (477888774).

The spelling of 255444222 in words is "two hundred fifty-five million, four hundred forty-four thousand, two hundred twenty-two".