82646225 has 12 divisors (see below), whose sum is σ = 102624384. Its totient is φ = 66024720.

The previous prime is 82646191. The next prime is 82646237. The reversal of 82646225 is 52264628.

It is not a de Polignac number, because 82646225 - 2¹⁰ = 82645201 is a prime.

It is a Duffinian number.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 20312 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (8552032).

Almost surely, 2^82646225 is an apocalyptic number.

It is an amenable number.

82646225 is a deficient number, since it is larger than the sum of its proper divisors (19978159).

82646225 is a wasteful number, since it uses less digits than its factorization.

82646225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4624 (or 4619 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 82646225 is about 9090.9969200303. The cubic root of 82646225 is about 435.5864288728.

The spelling of 82646225 in words is "eighty-two million, six hundred forty-six thousand, two hundred twenty-five".