225635 has 4 divisors (see below), whose sum is σ = 270768. Its totient is φ = 180504.

The previous prime is 225629. The next prime is 225637. The reversal of 225635 is 536522.

It is a happy number.

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 225635 - 2⁴ = 225619 is a prime.

It is a super-2 number, since 2×225635² = 101822306450, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁶ + 2¹⁵ + 6 + 5² + 3¹¹ + 5⁶ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225635.

It is not an unprimeable number, because it can be changed into a prime (225637) 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, 22559 + ... + 22568.

It is an arithmetic number, because the mean of its divisors is an integer number (67692).

2²²⁵⁶³⁵ is an apocalyptic number.

225635 is a deficient number, since it is larger than the sum of its proper divisors (45133).

225635 is an equidigital number, since it uses as much as digits as its factorization.

225635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45132.

The product of its digits is 1800, while the sum is 23.

The square root of 225635 is about 475.0105261992. The cubic root of 225635 is about 60.8791839650.

The spelling of 225635 in words is "two hundred twenty-five thousand, six hundred thirty-five".