822508225 has 48 divisors (see below), whose sum is σ = 1298774016. Its totient is φ = 501768000.

The previous prime is 822508207. The next prime is 822508249. The reversal of 822508225 is 522805228.

It is a de Polignac number, because none of the positive numbers 2^k-822508225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85930 + ... + 95020.

It is an arithmetic number, because the mean of its divisors is an integer number (27057792).

Almost surely, 2^822508225 is an apocalyptic number.

It is an amenable number.

822508225 is a deficient number, since it is larger than the sum of its proper divisors (476265791).

822508225 is a wasteful number, since it uses less digits than its factorization.

822508225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9166 (or 9161 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The square root of 822508225 is about 28679.4041953455. The cubic root of 822508225 is about 936.9435299106.

The spelling of 822508225 in words is "eight hundred twenty-two million, five hundred eight thousand, two hundred twenty-five".