225895 has 4 divisors (see below), whose sum is σ = 271080. Its totient is φ = 180712.

The previous prime is 225889. The next prime is 225919. The reversal of 225895 is 598522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 598522 = 2 ⋅299261.

It is a cyclic number.

It is not a de Polignac number, because 225895 - 2⁷ = 225767 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2² + 2¹⁶ + 8⁴ + 5⁷ + 9 + 5⁷ .

It is a plaindrome in base 11.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22585 + ... + 22594.

It is an arithmetic number, because the mean of its divisors is an integer number (67770).

2²²⁵⁸⁹⁵ is an apocalyptic number.

225895 is a deficient number, since it is larger than the sum of its proper divisors (45185).

225895 is an equidigital number, since it uses as much as digits as its factorization.

225895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45184.

The product of its digits is 7200, while the sum is 31.

The square root of 225895 is about 475.2841255502. The cubic root of 225895 is about 60.9025587546.

The spelling of 225895 in words is "two hundred twenty-five thousand, eight hundred ninety-five".