12508189 has 2 divisors, whose sum is σ = 12508190. Its totient is φ = 12508188.

The previous prime is 12508187. The next prime is 12508201. The reversal of 12508189 is 98180521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 708964 = 3435^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 12508189 - 2¹ = 12508187 is a prime.

Together with 12508187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12508187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6254094 + 6254095.

It is an arithmetic number, because the mean of its divisors is an integer number (6254095).

Almost surely, 2^12508189 is an apocalyptic number.

It is an amenable number.

12508189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12508189 is an equidigital number, since it uses as much as digits as its factorization.

12508189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12508189 is about 3536.6918158075. The cubic root of 12508189 is about 232.1301105788.

The spelling of 12508189 in words is "twelve million, five hundred eight thousand, one hundred eighty-nine".