225363161 has 4 divisors (see below), whose sum is σ = 237224400. Its totient is φ = 213501924.

The previous prime is 225363157. The next prime is 225363209. The reversal of 225363161 is 161363522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225363161 - 2² = 225363157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225363461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5930591 + ... + 5930628.

It is an arithmetic number, because the mean of its divisors is an integer number (59306100).

Almost surely, 2^225363161 is an apocalyptic number.

It is an amenable number.

225363161 is a deficient number, since it is larger than the sum of its proper divisors (11861239).

225363161 is a wasteful number, since it uses less digits than its factorization.

225363161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11861238.

The product of its digits is 6480, while the sum is 29.

The square root of 225363161 is about 15012.1004859413. The cubic root of 225363161 is about 608.5472560378.

The spelling of 225363161 in words is "two hundred twenty-five million, three hundred sixty-three thousand, one hundred sixty-one".