2255242220 has 96 divisors (see below), whose sum is σ = 6016260096. Its totient is φ = 689644800.

The previous prime is 2255242201. The next prime is 2255242261. The reversal of 2255242220 is 222425522.

It is a super-2 number, since 2×2255242220² = 10172234941741056800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2255242220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67805 + ... + 95435.

It is an arithmetic number, because the mean of its divisors is an integer number (62669376).

Almost surely, 2^2255242220 is an apocalyptic number.

2255242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2255242220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3008130048).

2255242220 is an abundant number, since it is smaller than the sum of its proper divisors (3761017876).

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

2255242220 is a wasteful number, since it uses less digits than its factorization.

2255242220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27711 (or 27709 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 2255242220 is about 47489.3906046393. The cubic root of 2255242220 is about 1311.3875746654.

Adding to 2255242220 its reverse (222425522), we get a palindrome (2477667742).

The spelling of 2255242220 in words is "two billion, two hundred fifty-five million, two hundred forty-two thousand, two hundred twenty".