225915 has 8 divisors (see below), whose sum is σ = 361488. Its totient is φ = 120480.

The previous prime is 225889. The next prime is 225919. The reversal of 225915 is 519522.

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

It is not a de Polignac number, because 225915 - 2¹⁰ = 224891 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225915.

It is not an unprimeable number, because it can be changed into a prime (225919) 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, 7516 + ... + 7545.

It is an arithmetic number, because the mean of its divisors is an integer number (45186).

2²²⁵⁹¹⁵ is an apocalyptic number.

225915 is a deficient number, since it is larger than the sum of its proper divisors (135573).

225915 is a wasteful number, since it uses less digits than its factorization.

225915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15069.

The product of its digits is 900, while the sum is 24.

The square root of 225915 is about 475.3051651308. The cubic root of 225915 is about 60.9043560723.

The spelling of 225915 in words is "two hundred twenty-five thousand, nine hundred fifteen".