12125647 has 2 divisors, whose sum is σ = 12125648. Its totient is φ = 12125646.

The previous prime is 12125609. The next prime is 12125651. The reversal of 12125647 is 74652121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12125647 - 2¹⁵ = 12092879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12125657) 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, 6062823 + 6062824.

It is an arithmetic number, because the mean of its divisors is an integer number (6062824).

Almost surely, 2^12125647 is an apocalyptic number.

12125647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12125647 is an equidigital number, since it uses as much as digits as its factorization.

12125647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 12125647 is about 3482.1899718424. The cubic root of 12125647 is about 229.7391308215.

Adding to 12125647 its reverse (74652121), we get a palindrome (86777768).

It can be divided in two parts, 1212 and 5647, that added together give a cube (6859 = 19³).

The spelling of 12125647 in words is "twelve million, one hundred twenty-five thousand, six hundred forty-seven".