225829 has 2 divisors, whose sum is σ = 225830. Its totient is φ = 225828.

The previous prime is 225821. The next prime is 225839. The reversal of 225829 is 928522.

225829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216225 + 9604 = 465^2 + 98^2 .

It is a cyclic number.

It is not a de Polignac number, because 225829 - 2³ = 225821 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 225797 and 225806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112914 + 112915.

It is an arithmetic number, because the mean of its divisors is an integer number (112915).

2²²⁵⁸²⁹ is an apocalyptic number.

It is an amenable number.

225829 is a deficient number, since it is larger than the sum of its proper divisors (1).

225829 is an equidigital number, since it uses as much as digits as its factorization.

225829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 28.

The square root of 225829 is about 475.2146883252. The cubic root of 225829 is about 60.8966268535.

The spelling of 225829 in words is "two hundred twenty-five thousand, eight hundred twenty-nine".