8172825 has 12 divisors (see below), whose sum is σ = 13512528. Its totient is φ = 4358800.

The previous prime is 8172821. The next prime is 8172833. The reversal of 8172825 is 5282718.

It is not a de Polignac number, because 8172825 - 2² = 8172821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8172821) by changing a digit.

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, 54411 + ... + 54560.

It is an arithmetic number, because the mean of its divisors is an integer number (1126044).

Almost surely, 2^8172825 is an apocalyptic number.

It is an amenable number.

8172825 is a deficient number, since it is larger than the sum of its proper divisors (5339703).

8172825 is a wasteful number, since it uses less digits than its factorization.

8172825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108984 (or 108979 counting only the distinct ones).

The product of its digits is 8960, while the sum is 33.

The square root of 8172825 is about 2858.8153140768. The cubic root of 8172825 is about 201.4299600384.

The spelling of 8172825 in words is "eight million, one hundred seventy-two thousand, eight hundred twenty-five".