22420425217 has 2 divisors, whose sum is σ = 22420425218. Its totient is φ = 22420425216.

The previous prime is 22420425173. The next prime is 22420425221. The reversal of 22420425217 is 71252402422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21663129856 + 757295361 = 147184^2 + 27519^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420425217 - 2¹¹ = 22420423169 is a prime.

It is a super-2 number, since 2×22420425217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22420425257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210212608 + 11210212609.

It is an arithmetic number, because the mean of its divisors is an integer number (11210212609).

Almost surely, 2^22420425217 is an apocalyptic number.

It is an amenable number.

22420425217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420425217 is an equidigital number, since it uses as much as digits as its factorization.

22420425217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 31.

Adding to 22420425217 its reverse (71252402422), we get a palindrome (93672827639).

The spelling of 22420425217 in words is "twenty-two billion, four hundred twenty million, four hundred twenty-five thousand, two hundred seventeen".