2568999220 has 48 divisors (see below), whose sum is σ = 5635244160. Its totient is φ = 982509696.

The previous prime is 2568999187. The next prime is 2568999247. The reversal of 2568999220 is 229998652.

2568999220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38239 + ... + 81241.

It is an arithmetic number, because the mean of its divisors is an integer number (117400920).

Almost surely, 2^2568999220 is an apocalyptic number.

2568999220 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 2568999220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2817622080).

2568999220 is an abundant number, since it is smaller than the sum of its proper divisors (3066244940).

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

2568999220 is a wasteful number, since it uses less digits than its factorization.

2568999220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43144 (or 43142 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 2568999220 is about 50685.2958953581. The cubic root of 2568999220 is about 1369.5818462054.

The spelling of 2568999220 in words is "two billion, five hundred sixty-eight million, nine hundred ninety-nine thousand, two hundred twenty".