2255185878 has 32 divisors (see below), whose sum is σ = 4922111232. Its totient is φ = 683152800.

The previous prime is 2255185787. The next prime is 2255185909. The reversal of 2255185878 is 8785815522.

It is a self number, because there is not a number n which added to its sum of digits gives 2255185878.

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, 324783 + ... + 331653.

It is an arithmetic number, because the mean of its divisors is an integer number (153815976).

Almost surely, 2^2255185878 is an apocalyptic number.

2255185878 is an abundant number, since it is smaller than the sum of its proper divisors (2666925354).

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

2255185878 is a wasteful number, since it uses less digits than its factorization.

2255185878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860.

The product of its digits is 1792000, while the sum is 51.

The square root of 2255185878 is about 47488.7973947541. The cubic root of 2255185878 is about 1311.3766539148.

The spelling of 2255185878 in words is "two billion, two hundred fifty-five million, one hundred eighty-five thousand, eight hundred seventy-eight".