225847 has 4 divisors (see below), whose sum is σ = 226800. Its totient is φ = 224896.

The previous prime is 225839. The next prime is 225859. The reversal of 225847 is 748522.

225847 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225847 - 2³ = 225839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225347) by changing a digit.

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, 198 + ... + 700.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2²²⁵⁸⁴⁷ is an apocalyptic number.

225847 is a deficient number, since it is larger than the sum of its proper divisors (953).

225847 is an equidigital number, since it uses as much as digits as its factorization.

225847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its digits is 4480, while the sum is 28.

The square root of 225847 is about 475.2336267564. The cubic root of 225847 is about 60.8982447593.

The spelling of 225847 in words is "two hundred twenty-five thousand, eight hundred forty-seven".