255220176220 has 24 divisors (see below), whose sum is σ = 540053691408. Its totient is φ = 101308771200.

The previous prime is 255220176203. The next prime is 255220176259. The reversal of 255220176220 is 22671022552.

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, 48703521 + ... + 48708760.

It is an arithmetic number, because the mean of its divisors is an integer number (22502237142).

Almost surely, 2^255220176220 is an apocalyptic number.

255220176220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255220176220 is an abundant number, since it is smaller than the sum of its proper divisors (284833515188).

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

255220176220 is a wasteful number, since it uses less digits than its factorization.

255220176220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97412421 (or 97412419 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 255220176220 its reverse (22671022552), we get a palindrome (277891198772).

The spelling of 255220176220 in words is "two hundred fifty-five billion, two hundred twenty million, one hundred seventy-six thousand, two hundred twenty".