225111312 has 60 divisors (see below), whose sum is σ = 653343600. Its totient is φ = 75035808.

The previous prime is 225111287. The next prime is 225111323. The reversal of 225111312 is 213111522.

225111312 is a `hidden beast` number, since 22 + 511 + 131 + 2 = 666.

225111312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×225111312² = 101350205580722688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25062 + ... + 32837.

It is an arithmetic number, because the mean of its divisors is an integer number (10889060).

Almost surely, 2^225111312 is an apocalyptic number.

It is an amenable number.

225111312 is an abundant number, since it is smaller than the sum of its proper divisors (428232288).

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

225111312 is an equidigital number, since it uses as much as digits as its factorization.

225111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57922 (or 57904 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 225111312 is about 15003.7099412112. The cubic root of 225111312 is about 608.3204825875.

Adding to 225111312 its reverse (213111522), we get a palindrome (438222834).

The spelling of 225111312 in words is "two hundred twenty-five million, one hundred eleven thousand, three hundred twelve".