255224220 has 24 divisors (see below), whose sum is σ = 714627984. Its totient is φ = 68059776.

The previous prime is 255224191. The next prime is 255224231. The reversal of 255224220 is 22422552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126809 + ... + 2126928.

It is an arithmetic number, because the mean of its divisors is an integer number (29776166).

Almost surely, 2^255224220 is an apocalyptic number.

255224220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255224220 is an abundant number, since it is smaller than the sum of its proper divisors (459403764).

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

255224220 is a wasteful number, since it uses less digits than its factorization.

255224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253749 (or 4253747 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 255224220 is about 15975.7384805836. The cubic root of 255224220 is about 634.3183791020.

Adding to 255224220 its reverse (22422552), we get a palindrome (277646772).

The spelling of 255224220 in words is "two hundred fifty-five million, two hundred twenty-four thousand, two hundred twenty".