6325605564221 has 2 divisors, whose sum is σ = 6325605564222. Its totient is φ = 6325605564220.

The previous prime is 6325605564197. The next prime is 6325605564251. The reversal of 6325605564221 is 1224655065236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6147989676196 + 177615888025 = 2479514^2 + 421445^2 .

It is a cyclic number.

It is not a de Polignac number, because 6325605564221 - 2¹⁸ = 6325605302077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6325605564251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162802782110 + 3162802782111.

It is an arithmetic number, because the mean of its divisors is an integer number (3162802782111).

Almost surely, 2^{6325605564221} is an apocalyptic number.

It is an amenable number.

6325605564221 is a deficient number, since it is larger than the sum of its proper divisors (1).

6325605564221 is an equidigital number, since it uses as much as digits as its factorization.

6325605564221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 6325605564221 in words is "six trillion, three hundred twenty-five billion, six hundred five million, five hundred sixty-four thousand, two hundred twenty-one".