8125669 has 2 divisors, whose sum is σ = 8125670. Its totient is φ = 8125668.

The previous prime is 8125639. The next prime is 8125697. The reversal of 8125669 is 9665218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 497025 = 2762^2 + 705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8125669 is a prime.

It is a super-2 number, since 2×8125669² = 132052993395122, which contains 22 as substring.

It is a Chen prime.

8125669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8125639) by changing a digit.

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 as a sum of consecutive naturals, namely, 4062834 + 4062835.

It is an arithmetic number, because the mean of its divisors is an integer number (4062835).

Almost surely, 2^8125669 is an apocalyptic number.

It is an amenable number.

8125669 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125669 is an equidigital number, since it uses as much as digits as its factorization.

8125669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 8125669 is about 2850.5559106953. Note that the first 3 decimals coincide. The cubic root of 8125669 is about 201.0418054509.

The spelling of 8125669 in words is "eight million, one hundred twenty-five thousand, six hundred sixty-nine".