2255872164 has 72 divisors (see below), whose sum is σ = 6514038720. Its totient is φ = 594951552.

The previous prime is 2255872163. The next prime is 2255872183. The reversal of 2255872164 is 4612785522.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2255872163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65259 + ... + 93650.

It is an arithmetic number, because the mean of its divisors is an integer number (90472760).

Almost surely, 2^2255872164 is an apocalyptic number.

It is an amenable number.

2255872164 is an abundant number, since it is smaller than the sum of its proper divisors (4258166556).

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

2255872164 is a wasteful number, since it uses less digits than its factorization.

2255872164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158949 (or 158934 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 2255872164 is about 47496.0226124251. The cubic root of 2255872164 is about 1311.5096641129.

The spelling of 2255872164 in words is "two billion, two hundred fifty-five million, eight hundred seventy-two thousand, one hundred sixty-four".