255412220 has 24 divisors (see below), whose sum is σ = 612989664. Its totient is φ = 87569856.

The previous prime is 255412139. The next prime is 255412237. The reversal of 255412220 is 22214552.

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, 912047 + ... + 912326.

It is an arithmetic number, because the mean of its divisors is an integer number (25541236).

Almost surely, 2^255412220 is an apocalyptic number.

255412220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255412220 is an abundant number, since it is smaller than the sum of its proper divisors (357577444).

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

255412220 is a wasteful number, since it uses less digits than its factorization.

255412220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824389 (or 1824387 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 255412220 is about 15981.6213195032. The cubic root of 255412220 is about 634.4740887060.

Adding to 255412220 its reverse (22214552), we get a palindrome (277626772).

The spelling of 255412220 in words is "two hundred fifty-five million, four hundred twelve thousand, two hundred twenty".