422505225 has 18 divisors (see below), whose sum is σ = 756754206. Its totient is φ = 225336000.

The previous prime is 422505221. The next prime is 422505227. The reversal of 422505225 is 522505224.

It can be written as a sum of positive squares in 3 ways, for example, as 34257609 + 388247616 = 5853^2 + 19704^2 .

It is not a de Polignac number, because 422505225 - 2² = 422505221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422505221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 938676 + ... + 939125.

Almost surely, 2^422505225 is an apocalyptic number.

422505225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

422505225 is a deficient number, since it is larger than the sum of its proper divisors (334248981).

422505225 is a wasteful number, since it uses less digits than its factorization.

422505225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877817 (or 1877809 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 422505225 is about 20554.9318899382. The cubic root of 422505225 is about 750.3732808511.

Subtracting 422505225 from its reverse (522505224), we obtain a palindrome (99999999).

The spelling of 422505225 in words is "four hundred twenty-two million, five hundred five thousand, two hundred twenty-five".