225865 has 8 divisors (see below), whose sum is σ = 273600. Its totient is φ = 178992.

The previous prime is 225859. The next prime is 225871. The reversal of 225865 is 568522.

225865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (225859) and next prime (225871).

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 225865 - 2⁹ = 225353 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882 + ... + 1108.

It is an arithmetic number, because the mean of its divisors is an integer number (34200).

2²²⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

225865 is a deficient number, since it is larger than the sum of its proper divisors (47735).

225865 is a wasteful number, since it uses less digits than its factorization.

225865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its digits is 4800, while the sum is 28.

The square root of 225865 is about 475.2525644328. The cubic root of 225865 is about 60.8998625792.

The spelling of 225865 in words is "two hundred twenty-five thousand, eight hundred sixty-five".