2255206220 has 24 divisors (see below), whose sum is σ = 4736835600. Its totient is φ = 901910592.

The previous prime is 2255206211. The next prime is 2255206267. The reversal of 2255206220 is 226025522.

It is a self number, because there is not a number n which added to its sum of digits gives 2255206220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175991 + ... + 188369.

It is an arithmetic number, because the mean of its divisors is an integer number (197368150).

Almost surely, 2^2255206220 is an apocalyptic number.

2255206220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2255206220 is an abundant number, since it is smaller than the sum of its proper divisors (2481629380).

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

2255206220 is a wasteful number, since it uses less digits than its factorization.

2255206220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497 (or 21495 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2255206220 is about 47489.0115710993. The cubic root of 2255206220 is about 1311.3805968187.

The spelling of 2255206220 in words is "two billion, two hundred fifty-five million, two hundred six thousand, two hundred twenty".