225900289 has 2 divisors, whose sum is σ = 225900290. Its totient is φ = 225900288.

The previous prime is 225900277. The next prime is 225900299. The reversal of 225900289 is 982009522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158331889 + 67568400 = 12583^2 + 8220^2 .

It is a cyclic number.

It is not a de Polignac number, because 225900289 - 2⁷ = 225900161 is a prime.

It is not a weakly prime, because it can be changed into another prime (225900209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112950144 + 112950145.

It is an arithmetic number, because the mean of its divisors is an integer number (112950145).

Almost surely, 2^225900289 is an apocalyptic number.

It is an amenable number.

225900289 is a deficient number, since it is larger than the sum of its proper divisors (1).

225900289 is an equidigital number, since it uses as much as digits as its factorization.

225900289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 225900289 is about 15029.9796739716. The cubic root of 225900289 is about 609.0303406556.

The spelling of 225900289 in words is "two hundred twenty-five million, nine hundred thousand, two hundred eighty-nine".