12585121 has 2 divisors, whose sum is σ = 12585122. Its totient is φ = 12585120.

The previous prime is 12585091. The next prime is 12585137. The reversal of 12585121 is 12158521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12110400 + 474721 = 3480^2 + 689^2 .

It is an emirp because it is prime and its reverse (12158521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12585121 - 2⁷ = 12584993 is a prime.

It is not a weakly prime, because it can be changed into another prime (12585161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6292560 + 6292561.

It is an arithmetic number, because the mean of its divisors is an integer number (6292561).

Almost surely, 2^12585121 is an apocalyptic number.

It is an amenable number.

12585121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12585121 is an equidigital number, since it uses as much as digits as its factorization.

12585121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 800, while the sum is 25.

The square root of 12585121 is about 3547.5514090708. The cubic root of 12585121 is about 232.6050459917.

The spelling of 12585121 in words is "twelve million, five hundred eighty-five thousand, one hundred twenty-one".