2255086920 has 128 divisors (see below), whose sum is σ = 6957498240. Its totient is φ = 584386560.

The previous prime is 2255086913. The next prime is 2255086973. The reversal of 2255086920 is 296805522.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1509694 + ... + 1511186.

It is an arithmetic number, because the mean of its divisors is an integer number (54355455).

Almost surely, 2^2255086920 is an apocalyptic number.

2255086920 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 2255086920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3478749120).

2255086920 is an abundant number, since it is smaller than the sum of its proper divisors (4702411320).

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

2255086920 is a wasteful number, since it uses less digits than its factorization.

2255086920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 2255086920 is about 47487.7554744378. The cubic root of 2255086920 is about 1311.3574724790.

The spelling of 2255086920 in words is "two billion, two hundred fifty-five million, eighty-six thousand, nine hundred twenty".