2556223792 has 80 divisors (see below), whose sum is σ = 5365370880. Its totient is φ = 1176940800.

The previous prime is 2556223781. The next prime is 2556223837. The reversal of 2556223792 is 2973226552.

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, 1020013 + ... + 1022515.

It is an arithmetic number, because the mean of its divisors is an integer number (67067136).

Almost surely, 2^2556223792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556223792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2682685440).

2556223792 is an abundant number, since it is smaller than the sum of its proper divisors (2809147088).

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

2556223792 is a wasteful number, since it uses less digits than its factorization.

2556223792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642 (or 2636 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The square root of 2556223792 is about 50559.1118592880. Note that the first 3 decimals coincide. The cubic root of 2556223792 is about 1367.3077987548.

The spelling of 2556223792 in words is "two billion, five hundred fifty-six million, two hundred twenty-three thousand, seven hundred ninety-two".