225653909 has 8 divisors (see below), whose sum is σ = 248183040. Its totient is φ = 203863536.

The previous prime is 225653887. The next prime is 225653917. The reversal of 225653909 is 909356522.

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

It is a cyclic number.

It is not a de Polignac number, because 225653909 - 2²⁰ = 224605333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225653009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184049 + ... + 185270.

It is an arithmetic number, because the mean of its divisors is an integer number (31022880).

Almost surely, 2^225653909 is an apocalyptic number.

It is an amenable number.

225653909 is a deficient number, since it is larger than the sum of its proper divisors (22529131).

225653909 is a wasteful number, since it uses less digits than its factorization.

225653909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369379.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 225653909 is about 15021.7811527129. The cubic root of 225653909 is about 608.8088454682.

It can be divided in two parts, 2256 and 53909, that added together give a palindrome (56165).

The spelling of 225653909 in words is "two hundred twenty-five million, six hundred fifty-three thousand, nine hundred nine".