4223664663225 has 72 divisors (see below), whose sum is σ = 8136748152288. Its totient is φ = 1927604448000.

The previous prime is 4223664663157. The next prime is 4223664663227. The reversal of 4223664663225 is 5223664663224.

4223664663225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4223664663225 - 2¹⁴ = 4223664646841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4223664663227) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1252522 + ... + 3164828.

It is an arithmetic number, because the mean of its divisors is an integer number (113010391004).

Almost surely, 2^{4223664663225} is an apocalyptic number.

It is an amenable number.

4223664663225 is a deficient number, since it is larger than the sum of its proper divisors (3913083489063).

4223664663225 is a wasteful number, since it uses less digits than its factorization.

4223664663225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912935 (or 1912923 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 51.

Subtracting 4223664663225 from its reverse (5223664663224), we obtain a palindrome (999999999999).

The spelling of 4223664663225 in words is "four trillion, two hundred twenty-three billion, six hundred sixty-four million, six hundred sixty-three thousand, two hundred twenty-five".