8125717 has 4 divisors (see below), whose sum is σ = 8197740. Its totient is φ = 8053696.

The previous prime is 8125697. The next prime is 8125723. The reversal of 8125717 is 7175218.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1745041 + 6380676 = 1321^2 + 2526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8125717 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8125757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35842 + ... + 36067.

It is an arithmetic number, because the mean of its divisors is an integer number (2049435).

Almost surely, 2^8125717 is an apocalyptic number.

It is an amenable number.

8125717 is a deficient number, since it is larger than the sum of its proper divisors (72023).

8125717 is a wasteful number, since it uses less digits than its factorization.

8125717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72022.

The product of its digits is 3920, while the sum is 31.

The square root of 8125717 is about 2850.5643300933. The cubic root of 8125717 is about 201.0422013152.

The spelling of 8125717 in words is "eight million, one hundred twenty-five thousand, seven hundred seventeen".