225289 has 2 divisors, whose sum is σ = 225290. Its totient is φ = 225288.

The previous prime is 225287. The next prime is 225299. The reversal of 225289 is 982522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 13689 = 460^2 + 117^2 .

It is a cyclic number.

It is not a de Polignac number, because 225289 - 2¹ = 225287 is a prime.

Together with 225287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (225287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112644 + 112645.

It is an arithmetic number, because the mean of its divisors is an integer number (112645).

2²²⁵²⁸⁹ is an apocalyptic number.

It is an amenable number.

225289 is a deficient number, since it is larger than the sum of its proper divisors (1).

225289 is an equidigital number, since it uses as much as digits as its factorization.

225289 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 225289 is about 474.6461840150. The cubic root of 225289 is about 60.8480496496.

It can be divided in two parts, 225 and 289, that multiplied together give a square (65025 = 255²).

The spelling of 225289 in words is "two hundred twenty-five thousand, two hundred eighty-nine".