817066225 has 36 divisors (see below), whose sum is σ = 1063860480. Its totient is φ = 622356000.

The previous prime is 817066207. The next prime is 817066247. The reversal of 817066225 is 522660718.

It is a happy number.

817066225 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 817066225 - 2²⁹ = 280195313 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1705536 + ... + 1706014.

It is an arithmetic number, because the mean of its divisors is an integer number (29551680).

Almost surely, 2^817066225 is an apocalyptic number.

It is an amenable number.

817066225 is a deficient number, since it is larger than the sum of its proper divisors (246794255).

817066225 is a wasteful number, since it uses less digits than its factorization.

817066225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 817066225 is about 28584.3702921719. The cubic root of 817066225 is about 934.8725745495.

The spelling of 817066225 in words is "eight hundred seventeen million, sixty-six thousand, two hundred twenty-five".