2556808222 has 4 divisors (see below), whose sum is σ = 3835212336. Its totient is φ = 1278404110.

The previous prime is 2556808217. The next prime is 2556808249. The reversal of 2556808222 is 2228086552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639202054 + ... + 639202057.

It is an arithmetic number, because the mean of its divisors is an integer number (958803084).

Almost surely, 2^2556808222 is an apocalyptic number.

2556808222 is a deficient number, since it is larger than the sum of its proper divisors (1278404114).

2556808222 is a wasteful number, since it uses less digits than its factorization.

2556808222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278404113.

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 2556808222 is about 50564.8911993292. The cubic root of 2556808222 is about 1367.4119934407.

The spelling of 2556808222 in words is "two billion, five hundred fifty-six million, eight hundred eight thousand, two hundred twenty-two".