225330881 has 2 divisors, whose sum is σ = 225330882. Its totient is φ = 225330880.

The previous prime is 225330877. The next prime is 225330883. The reversal of 225330881 is 188033522.

225330881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204032656 + 21298225 = 14284^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 225330881 - 2² = 225330877 is a prime.

It is a super-2 number, since 2×225330881² = 101548011864472322, which contains 22 as substring.

Together with 225330883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (225330883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112665440 + 112665441.

It is an arithmetic number, because the mean of its divisors is an integer number (112665441).

Almost surely, 2^225330881 is an apocalyptic number.

It is an amenable number.

225330881 is a deficient number, since it is larger than the sum of its proper divisors (1).

225330881 is an equidigital number, since it uses as much as digits as its factorization.

225330881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 225330881 is about 15011.0253147478. The cubic root of 225330881 is about 608.5181994648.

The spelling of 225330881 in words is "two hundred twenty-five million, three hundred thirty thousand, eight hundred eighty-one".