422646225 has 12 divisors (see below), whose sum is σ = 698775216. Its totient is φ = 225411280.

The previous prime is 422646139. The next prime is 422646239. The reversal of 422646225 is 522646224.

It is not a de Polignac number, because 422646225 - 2²⁸ = 154210769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2817567 + ... + 2817716.

It is an arithmetic number, because the mean of its divisors is an integer number (58231268).

Almost surely, 2^422646225 is an apocalyptic number.

It is an amenable number.

422646225 is a deficient number, since it is larger than the sum of its proper divisors (276128991).

422646225 is a wasteful number, since it uses less digits than its factorization.

422646225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5635296 (or 5635291 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 422646225 is about 20558.3614376244. The cubic root of 422646225 is about 750.4567440123.

Subtracting 422646225 from its reverse (522646224), we obtain a palindrome (99999999).

The spelling of 422646225 in words is "four hundred twenty-two million, six hundred forty-six thousand, two hundred twenty-five".