8209925 has 6 divisors (see below), whose sum is σ = 10180338. Its totient is φ = 6567920.

The previous prime is 8209907. The next prime is 8209931. The reversal of 8209925 is 5299028.

It can be written as a sum of positive squares in 3 ways, for example, as 195364 + 8014561 = 442^2 + 2831^2 .

It is not a de Polignac number, because 8209925 - 2¹⁰ = 8208901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164174 + ... + 164223.

It is an arithmetic number, because the mean of its divisors is an integer number (1696723).

Almost surely, 2^8209925 is an apocalyptic number.

It is an amenable number.

8209925 is a deficient number, since it is larger than the sum of its proper divisors (1970413).

8209925 is a wasteful number, since it uses less digits than its factorization.

8209925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328407 (or 328402 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 8209925 is about 2865.2966687588. The cubic root of 8209925 is about 201.7342926750.

The spelling of 8209925 in words is "eight million, two hundred nine thousand, nine hundred twenty-five".