255230220 has 72 divisors (see below), whose sum is σ = 831330864. Its totient is φ = 58337664.

The previous prime is 255230219. The next prime is 255230221. The reversal of 255230220 is 22032552.

It is an interprime number because it is at equal distance from previous prime (255230219) and next prime (255230221).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (255230221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40467 + ... + 46346.

It is an arithmetic number, because the mean of its divisors is an integer number (11546262).

Almost surely, 2^255230220 is an apocalyptic number.

255230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255230220 is an abundant number, since it is smaller than the sum of its proper divisors (576100644).

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

255230220 is a wasteful number, since it uses less digits than its factorization.

255230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86839 (or 86830 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 255230220 is about 15975.9262642264. The cubic root of 255230220 is about 634.3233497385.

Adding to 255230220 its reverse (22032552), we get a palindrome (277262772).

The spelling of 255230220 in words is "two hundred fifty-five million, two hundred thirty thousand, two hundred twenty".