325189561 has 2 divisors, whose sum is σ = 325189562. Its totient is φ = 325189560.

The previous prime is 325189489. The next prime is 325189567. The reversal of 325189561 is 165981523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185477161 + 139712400 = 13619^2 + 11820^2 .

It is a cyclic number.

It is not a de Polignac number, because 325189561 - 2⁹ = 325189049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (325189567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162594780 + 162594781.

It is an arithmetic number, because the mean of its divisors is an integer number (162594781).

Almost surely, 2^325189561 is an apocalyptic number.

It is an amenable number.

325189561 is a deficient number, since it is larger than the sum of its proper divisors (1).

325189561 is an equidigital number, since it uses as much as digits as its factorization.

325189561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 325189561 is about 18033.0130871133. The cubic root of 325189561 is about 687.6680790592.

The spelling of 325189561 in words is "three hundred twenty-five million, one hundred eighty-nine thousand, five hundred sixty-one".