325257817 has 2 divisors, whose sum is σ = 325257818. Its totient is φ = 325257816.

The previous prime is 325257799. The next prime is 325257833. The reversal of 325257817 is 718752523.

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., 163942416 + 161315401 = 12804^2 + 12701^2 .

It is a cyclic number.

It is not a de Polignac number, because 325257817 - 2²³ = 316869209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325257817.

It is not a weakly prime, because it can be changed into another prime (325257217) 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, 162628908 + 162628909.

It is an arithmetic number, because the mean of its divisors is an integer number (162628909).

Almost surely, 2^325257817 is an apocalyptic number.

It is an amenable number.

325257817 is a deficient number, since it is larger than the sum of its proper divisors (1).

325257817 is an equidigital number, since it uses as much as digits as its factorization.

325257817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 325257817 is about 18034.9055168027. The cubic root of 325257817 is about 687.7161886281.

It can be divided in two parts, 32 and 5257817, that added together give a square (5257849 = 2293²).

The spelling of 325257817 in words is "three hundred twenty-five million, two hundred fifty-seven thousand, eight hundred seventeen".