325545809 has 2 divisors, whose sum is σ = 325545810. Its totient is φ = 325545808.

The previous prime is 325545757. The next prime is 325545889. The reversal of 325545809 is 908545523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263088400 + 62457409 = 16220^2 + 7903^2 .

It is a cyclic number.

It is not a de Polignac number, because 325545809 - 2²⁰ = 324497233 is a prime.

It is a Chen prime.

It is equal to p_17558249 and since 325545809 and 17558249 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (325545889) 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, 162772904 + 162772905.

It is an arithmetic number, because the mean of its divisors is an integer number (162772905).

Almost surely, 2^325545809 is an apocalyptic number.

It is an amenable number.

325545809 is a deficient number, since it is larger than the sum of its proper divisors (1).

325545809 is an equidigital number, since it uses as much as digits as its factorization.

325545809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 325545809 is about 18042.8880448780. Note that the first 3 decimals coincide. The cubic root of 325545809 is about 687.9191028744.

The spelling of 325545809 in words is "three hundred twenty-five million, five hundred forty-five thousand, eight hundred nine".