225611065 has 8 divisors (see below), whose sum is σ = 270815688. Its totient is φ = 180433920.

The previous prime is 225611051. The next prime is 225611077. The reversal of 225611065 is 560116522.

It can be written as a sum of positive squares in 4 ways, for example, as 18481401 + 207129664 = 4299^2 + 14392^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225611065 - 2⁵ = 225611033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23059 + ... + 31351.

It is an arithmetic number, because the mean of its divisors is an integer number (33851961).

Almost surely, 2^225611065 is an apocalyptic number.

It is an amenable number.

225611065 is a deficient number, since it is larger than the sum of its proper divisors (45204623).

225611065 is an equidigital number, since it uses as much as digits as its factorization.

225611065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13739.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 225611065 is about 15020.3550224354. The cubic root of 225611065 is about 608.7703123339.

Adding to 225611065 its reverse (560116522), we get a palindrome (785727587).

The spelling of 225611065 in words is "two hundred twenty-five million, six hundred eleven thousand, sixty-five".