3125669 has 2 divisors, whose sum is σ = 3125670. Its totient is φ = 3125668.

The previous prime is 3125659. The next prime is 3125711. The reversal of 3125669 is 9665213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3104644 + 21025 = 1762^2 + 145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3125669 is a prime.

It is a super-2 number, since 2×3125669² = 19539613395122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3125659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562834 + 1562835.

It is an arithmetic number, because the mean of its divisors is an integer number (1562835).

Almost surely, 2^3125669 is an apocalyptic number.

It is an amenable number.

3125669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125669 is an equidigital number, since it uses as much as digits as its factorization.

3125669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 3125669 is about 1767.9561646149. The cubic root of 3125669 is about 146.2113190615.

The spelling of 3125669 in words is "three million, one hundred twenty-five thousand, six hundred sixty-nine".