225533603165 has 16 divisors (see below), whose sum is σ = 291526531968. Its totient is φ = 166509193536.

The previous prime is 225533603143. The next prime is 225533603173. The reversal of 225533603165 is 561306335522.

It is a cyclic number.

It is not a de Polignac number, because 225533603165 - 2⁸ = 225533602909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119687 + ... + 682196.

It is an arithmetic number, because the mean of its divisors is an integer number (18220408248).

Almost surely, 2^225533603165 is an apocalyptic number.

It is an amenable number.

225533603165 is a deficient number, since it is larger than the sum of its proper divisors (65992928803).

225533603165 is a wasteful number, since it uses less digits than its factorization.

225533603165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806228.

The product of its (nonzero) digits is 486000, while the sum is 41.

Adding to 225533603165 its reverse (561306335522), we get a palindrome (786839938687).

The spelling of 225533603165 in words is "two hundred twenty-five billion, five hundred thirty-three million, six hundred three thousand, one hundred sixty-five".