2255940856 has 32 divisors (see below), whose sum is σ = 4712349600. Its totient is φ = 1005298560.

The previous prime is 2255940829. The next prime is 2255940859. The reversal of 2255940856 is 6580495522.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255940859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370980 + ... + 377011.

It is an arithmetic number, because the mean of its divisors is an integer number (147260925).

Almost surely, 2^2255940856 is an apocalyptic number.

2255940856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2255940856 is an abundant number, since it is smaller than the sum of its proper divisors (2456408744).

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

2255940856 is a wasteful number, since it uses less digits than its factorization.

2255940856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748039 (or 748035 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The square root of 2255940856 is about 47496.7457411558. The cubic root of 2255940856 is about 1311.5229759351.

The spelling of 2255940856 in words is "two billion, two hundred fifty-five million, nine hundred forty thousand, eight hundred fifty-six".