2220155256 has 64 divisors (see below), whose sum is σ = 6411156480. Its totient is φ = 633198080.

The previous prime is 2220155243. The next prime is 2220155321. The reversal of 2220155256 is 6525510222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242856 + ... + 251831.

It is an arithmetic number, because the mean of its divisors is an integer number (100174320).

Almost surely, 2^2220155256 is an apocalyptic number.

It is an amenable number.

2220155256 is an abundant number, since it is smaller than the sum of its proper divisors (4191001224).

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

2220155256 is a wasteful number, since it uses less digits than its factorization.

2220155256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494724 (or 494720 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2220155256 is about 47118.5234912980. The cubic root of 2220155256 is about 1304.5511599232.

Adding to 2220155256 its reverse (6525510222), we get a palindrome (8745665478).

The spelling of 2220155256 in words is "two billion, two hundred twenty million, one hundred fifty-five thousand, two hundred fifty-six".