225853633 has 4 divisors (see below), whose sum is σ = 225888340. Its totient is φ = 225818928.

The previous prime is 225853603. The next prime is 225853669. The reversal of 225853633 is 336358522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29517489 + 196336144 = 5433^2 + 14012^2 .

It is a 3-Lehmer number, since φ(225853633) divides (225853633-1)³.

It is a cyclic number.

It is not a de Polignac number, because 225853633 - 2²⁵ = 192299201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225853592 and 225853601.

It is not an unprimeable number, because it can be changed into a prime (225853603) 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, 4338 + ... + 21691.

It is an arithmetic number, because the mean of its divisors is an integer number (56472085).

It is a Poulet number, since it divides 2^225853632-1.

Almost surely, 2^225853633 is an apocalyptic number.

225853633 is the 8677-th octagonal number.

It is an amenable number.

225853633 is a deficient number, since it is larger than the sum of its proper divisors (34707).

225853633 is an equidigital number, since it uses as much as digits as its factorization.

225853633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34706.

The product of its digits is 129600, while the sum is 37.

The square root of 225853633 is about 15028.4274959159. The cubic root of 225853633 is about 608.9884093591.

The spelling of 225853633 in words is "two hundred twenty-five million, eight hundred fifty-three thousand, six hundred thirty-three".