225559 has 4 divisors (see below), whose sum is σ = 226840. Its totient is φ = 224280.

The previous prime is 225529. The next prime is 225569. The reversal of 225559 is 955522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225559 - 2⁵ = 225527 is a prime.

It is a Duffinian 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 (225509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (56710).

2²²⁵⁵⁵⁹ is an apocalyptic number.

225559 is a deficient number, since it is larger than the sum of its proper divisors (1281).

225559 is a wasteful number, since it uses less digits than its factorization.

225559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 4500, while the sum is 28.

The square root of 225559 is about 474.9305212344. The cubic root of 225559 is about 60.8723479429.

It can be divided in two parts, 225 and 559, that added together give a square (784 = 28²).

The spelling of 225559 in words is "two hundred twenty-five thousand, five hundred fifty-nine".