225005 has 8 divisors (see below), whose sum is σ = 294624. Its totient is φ = 163600.

The previous prime is 224993. The next prime is 225023. The reversal of 225005 is 500522.

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

It is not a de Polignac number, because 225005 - 2¹⁶ = 159469 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1991 + ... + 2100.

It is an arithmetic number, because the mean of its divisors is an integer number (36828).

2²²⁵⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

225005 is a deficient number, since it is larger than the sum of its proper divisors (69619).

225005 is a wasteful number, since it uses less digits than its factorization.

225005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107.

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 225005 is about 474.3469194587. The cubic root of 225005 is about 60.8224704859.

Adding to 225005 its reverse (500522), we get a palindrome (725527).

The spelling of 225005 in words is "two hundred twenty-five thousand, five".