225869 has 8 divisors (see below), whose sum is σ = 264768. Its totient is φ = 188640.

The previous prime is 225859. The next prime is 225871. The reversal of 225869 is 968522.

225869 = T₈₂ + T₈₃ + ... + T₁₂₃.

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

It is a cyclic number.

It is not a de Polignac number, because 225869 - 2⁸ = 225613 is a prime.

It is a super-2 number, since 2×225869² = 102033610322, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225869.

It is not an unprimeable number, because it can be changed into a prime (225809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (33096).

2²²⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

225869 is a deficient number, since it is larger than the sum of its proper divisors (38899).

225869 is an equidigital number, since it uses as much as digits as its factorization.

225869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its digits is 8640, while the sum is 32.

The square root of 225869 is about 475.2567727029. The cubic root of 225869 is about 60.9002220830.

The spelling of 225869 in words is "two hundred twenty-five thousand, eight hundred sixty-nine".