325551022189961 has 2 divisors, whose sum is σ = 325551022189962. Its totient is φ = 325551022189960.

The previous prime is 325551022189951. The next prime is 325551022189963. The reversal of 325551022189961 is 169981220155523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206047536174736 + 119503486015225 = 14354356^2 + 10931765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325551022189961 is a prime.

Together with 325551022189963, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 325551022189961.

It is not a weakly prime, because it can be changed into another prime (325551022189963) 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, 162775511094980 + 162775511094981.

It is an arithmetic number, because the mean of its divisors is an integer number (162775511094981).

Almost surely, 2^{325551022189961} is an apocalyptic number.

It is an amenable number.

325551022189961 is a deficient number, since it is larger than the sum of its proper divisors (1).

325551022189961 is an equidigital number, since it uses as much as digits as its factorization.

325551022189961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664000, while the sum is 59.

The spelling of 325551022189961 in words is "three hundred twenty-five trillion, five hundred fifty-one billion, twenty-two million, one hundred eighty-nine thousand, nine hundred sixty-one".