225969 has 4 divisors (see below), whose sum is σ = 301296. Its totient is φ = 150644.

The previous prime is 225961. The next prime is 225977. The reversal of 225969 is 969522.

225969 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (225961) and next prime (225977).

It is a cyclic number.

It is not a de Polignac number, because 225969 - 2³ = 225961 is a prime.

It is a super-2 number, since 2×225969² = 102123977922, which contains 22 as substring.

It is a D-number.

225969 is strictly pandigital in base 7.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225961) 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, 37659 + ... + 37664.

It is an arithmetic number, because the mean of its divisors is an integer number (75324).

2²²⁵⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

225969 is a deficient number, since it is larger than the sum of its proper divisors (75327).

225969 is an equidigital number, since it uses as much as digits as its factorization.

225969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75326.

The product of its digits is 9720, while the sum is 33.

The square root of 225969 is about 475.3619673470. The cubic root of 225969 is about 60.9092083002.

The spelling of 225969 in words is "two hundred twenty-five thousand, nine hundred sixty-nine".