5228666668225 has 162 divisors, whose sum is σ = 8976853823490. Its totient is φ = 3008688883200.

The previous prime is 5228666668189. The next prime is 5228666668229.

5228666668225 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 9 ways, for example, as 2717275309056 + 2511391359169 = 1648416^2 + 1584737^2 .

It is not a de Polignac number, because 5228666668225 - 2¹⁹ = 5228666143937 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (5228666668229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 24945661 + ... + 25154389.

Almost surely, 2^{5228666668225} is an apocalyptic number.

5228666668225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5228666668225 is a deficient number, since it is larger than the sum of its proper divisors (3748187155265).

5228666668225 is a wasteful number, since it uses less digits than its factorization.

5228666668225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208801 (or 208765 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 64.

The spelling of 5228666668225 in words is "five trillion, two hundred twenty-eight billion, six hundred sixty-six million, six hundred sixty-eight thousand, two hundred twenty-five".