225279 has 6 divisors (see below), whose sum is σ = 325416. Its totient is φ = 150180.

The previous prime is 225263. The next prime is 225287. The reversal of 225279 is 972522.

It is a happy number.

It is not a de Polignac number, because 225279 - 2⁴ = 225263 is a prime.

It is a plaindrome in base 8 and base 16.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12507 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (54236).

2²²⁵²⁷⁹ is an apocalyptic number.

225279 is a deficient number, since it is larger than the sum of its proper divisors (100137).

225279 is a wasteful number, since it uses less digits than its factorization.

225279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25037 (or 25034 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 225279 is about 474.6356497357. The cubic root of 225279 is about 60.8471493400.

It can be divided in two parts, 2 and 25279, that added together give a square (25281 = 159²).

The spelling of 225279 in words is "two hundred twenty-five thousand, two hundred seventy-nine".