8109125 has 16 divisors (see below), whose sum is σ = 10473840. Its totient is φ = 6260800.

The previous prime is 8109109. The next prime is 8109131. The reversal of 8109125 is 5219018.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1442401 + 6666724 = 1201^2 + 2582^2 .

It is not a de Polignac number, because 8109125 - 2⁴ = 8109109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8109094 and 8109103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2507 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (654615).

Almost surely, 2^8109125 is an apocalyptic number.

It is an amenable number.

8109125 is a deficient number, since it is larger than the sum of its proper divisors (2364715).

8109125 is a wasteful number, since it uses less digits than its factorization.

8109125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2271 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 8109125 is about 2847.6525420072. The cubic root of 8109125 is about 200.9052712376.

The spelling of 8109125 in words is "eight million, one hundred nine thousand, one hundred twenty-five".