12125887 has 2 divisors, whose sum is σ = 12125888. Its totient is φ = 12125886.

The previous prime is 12125851. The next prime is 12125891. The reversal of 12125887 is 78852121.

It is a strong prime.

It is an emirp because it is prime and its reverse (78852121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12125887 - 2⁷ = 12125759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12125837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6062943 + 6062944.

It is an arithmetic number, because the mean of its divisors is an integer number (6062944).

Almost surely, 2^12125887 is an apocalyptic number.

12125887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12125887 is an equidigital number, since it uses as much as digits as its factorization.

12125887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 34.

The square root of 12125887 is about 3482.2244327441. The cubic root of 12125887 is about 229.7406465352.

The spelling of 12125887 in words is "twelve million, one hundred twenty-five thousand, eight hundred eighty-seven".