325884810721 has 2 divisors, whose sum is σ = 325884810722. Its totient is φ = 325884810720.

The previous prime is 325884810623. The next prime is 325884810749. The reversal of 325884810721 is 127018488523.

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., 228231685696 + 97653125025 = 477736^2 + 312495^2 .

It is an emirp because it is prime and its reverse (127018488523) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325884810721 is a prime.

It is not a weakly prime, because it can be changed into another prime (325884810751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162942405360 + 162942405361.

It is an arithmetic number, because the mean of its divisors is an integer number (162942405361).

Almost surely, 2^325884810721 is an apocalyptic number.

It is an amenable number.

325884810721 is a deficient number, since it is larger than the sum of its proper divisors (1).

325884810721 is an equidigital number, since it uses as much as digits as its factorization.

325884810721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 325884810721 in words is "three hundred twenty-five billion, eight hundred eighty-four million, eight hundred ten thousand, seven hundred twenty-one".