325551022320421 has 2 divisors, whose sum is σ = 325551022320422. Its totient is φ = 325551022320420.

The previous prime is 325551022320401. The next prime is 325551022320439. The reversal of 325551022320421 is 124023220155523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209183864976100 + 116367157344321 = 14463190^2 + 10787361^2 .

It is a cyclic number.

It is not a de Polignac number, because 325551022320421 - 2⁵ = 325551022320389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325551022320401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162775511160210 + 162775511160211.

It is an arithmetic number, because the mean of its divisors is an integer number (162775511160211).

Almost surely, 2^{325551022320421} is an apocalyptic number.

It is an amenable number.

325551022320421 is a deficient number, since it is larger than the sum of its proper divisors (1).

325551022320421 is an equidigital number, since it uses as much as digits as its factorization.

325551022320421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 325551022320421 its reverse (124023220155523), we get a palindrome (449574242475944).

The spelling of 325551022320421 in words is "three hundred twenty-five trillion, five hundred fifty-one billion, twenty-two million, three hundred twenty thousand, four hundred twenty-one".