225668505 has 8 divisors (see below), whose sum is σ = 361069632. Its totient is φ = 120356528.

The previous prime is 225668501. The next prime is 225668519. The reversal of 225668505 is 505866522.

It is a happy number.

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 225668505 - 2² = 225668501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225668501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7522269 + ... + 7522298.

It is an arithmetic number, because the mean of its divisors is an integer number (45133704).

Almost surely, 2^225668505 is an apocalyptic number.

It is an amenable number.

225668505 is a deficient number, since it is larger than the sum of its proper divisors (135401127).

225668505 is a wasteful number, since it uses less digits than its factorization.

225668505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15044575.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 225668505 is about 15022.2669727308. The cubic root of 225668505 is about 608.8219717381.

The spelling of 225668505 in words is "two hundred twenty-five million, six hundred sixty-eight thousand, five hundred five".