225833809 has 2 divisors, whose sum is σ = 225833810. Its totient is φ = 225833808.

The previous prime is 225833789. The next prime is 225833827. The reversal of 225833809 is 908338522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197318209 + 28515600 = 14047^2 + 5340^2 .

It is a cyclic number.

It is not a de Polignac number, because 225833809 - 2¹¹ = 225831761 is a prime.

It is not a weakly prime, because it can be changed into another prime (225833009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112916904 + 112916905.

It is an arithmetic number, because the mean of its divisors is an integer number (112916905).

Almost surely, 2^225833809 is an apocalyptic number.

It is an amenable number.

225833809 is a deficient number, since it is larger than the sum of its proper divisors (1).

225833809 is an equidigital number, since it uses as much as digits as its factorization.

225833809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 225833809 is about 15027.7679313995. The cubic root of 225833809 is about 608.9705911239.

The spelling of 225833809 in words is "two hundred twenty-five million, eight hundred thirty-three thousand, eight hundred nine".