225789 has 8 divisors (see below), whose sum is σ = 305472. Its totient is φ = 148320.

The previous prime is 225781. The next prime is 225809. The reversal of 225789 is 987522.

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

It is not a de Polignac number, because 225789 - 2³ = 225781 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225781) by changing a digit.

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, 297 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (38184).

2²²⁵⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

225789 is a deficient number, since it is larger than the sum of its proper divisors (79683).

225789 is a wasteful number, since it uses less digits than its factorization.

225789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107.

The product of its digits is 10080, while the sum is 33.

The square root of 225789 is about 475.1726002202. The cubic root of 225789 is about 60.8930311994.

It can be divided in two parts, 2257 and 89, that added together give a triangular number (2346 = T₆₈).

The spelling of 225789 in words is "two hundred twenty-five thousand, seven hundred eighty-nine".