22025218605857 has 2 divisors, whose sum is σ = 22025218605858. Its totient is φ = 22025218605856.

The previous prime is 22025218605851. The next prime is 22025218605889. The reversal of 22025218605857 is 75850681252022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17095504278241 + 4929714327616 = 4134671^2 + 2220296^2 .

It is a cyclic number.

It is not a de Polignac number, because 22025218605857 - 2⁸ = 22025218605601 is a prime.

It is a super-2 number, since 2×22025218605857² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22025218605799 and 22025218605808.

It is not a weakly prime, because it can be changed into another prime (22025218605851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11012609302928 + 11012609302929.

It is an arithmetic number, because the mean of its divisors is an integer number (11012609302929).

Almost surely, 2^{22025218605857} is an apocalyptic number.

It is an amenable number.

22025218605857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22025218605857 is an equidigital number, since it uses as much as digits as its factorization.

22025218605857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376000, while the sum is 53.

Adding to 22025218605857 its reverse (75850681252022), we get a palindrome (97875899857879).

The spelling of 22025218605857 in words is "twenty-two trillion, twenty-five billion, two hundred eighteen million, six hundred five thousand, eight hundred fifty-seven".