304225133 has 2 divisors, whose sum is σ = 304225134. Its totient is φ = 304225132.

The previous prime is 304225111. The next prime is 304225147. The reversal of 304225133 is 331522403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282676969 + 21548164 = 16813^2 + 4642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304225133 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 304225099 and 304225108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304225153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152112566 + 152112567.

It is an arithmetic number, because the mean of its divisors is an integer number (152112567).

Almost surely, 2^304225133 is an apocalyptic number.

It is an amenable number.

304225133 is a deficient number, since it is larger than the sum of its proper divisors (1).

304225133 is an equidigital number, since it uses as much as digits as its factorization.

304225133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 304225133 is about 17442.0507108539. The cubic root of 304225133 is about 672.5610254042.

Adding to 304225133 its reverse (331522403), we get a palindrome (635747536).

The spelling of 304225133 in words is "three hundred four million, two hundred twenty-five thousand, one hundred thirty-three".