8109725 has 12 divisors (see below), whose sum is σ = 10830036. Its totient is φ = 5988480.

The previous prime is 8109719. The next prime is 8109733. The reversal of 8109725 is 5279018.

It can be written as a sum of positive squares in 6 ways, for example, as 386884 + 7722841 = 622^2 + 2779^2 .

It is not a de Polignac number, because 8109725 - 2¹⁴ = 8093341 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8109691 and 8109700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12152 + ... + 12801.

It is an arithmetic number, because the mean of its divisors is an integer number (902503).

Almost surely, 2^8109725 is an apocalyptic number.

It is an amenable number.

8109725 is a deficient number, since it is larger than the sum of its proper divisors (2720311).

8109725 is a wasteful number, since it uses less digits than its factorization.

8109725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24976 (or 24971 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 8109725 is about 2847.7578899899. The cubic root of 8109725 is about 200.9102261573.

The spelling of 8109725 in words is "eight million, one hundred nine thousand, seven hundred twenty-five".