12251389 has 2 divisors, whose sum is σ = 12251390. Its totient is φ = 12251388.

The previous prime is 12251363. The next prime is 12251411. The reversal of 12251389 is 98315221.

12251389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 71289 = 3490^2 + 267^2 .

It is an emirp because it is prime and its reverse (98315221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12251389 - 2⁵ = 12251357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12251389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12251359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125694 + 6125695.

It is an arithmetic number, because the mean of its divisors is an integer number (6125695).

Almost surely, 2^12251389 is an apocalyptic number.

It is an amenable number.

12251389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12251389 is an equidigital number, since it uses as much as digits as its factorization.

12251389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 12251389 is about 3500.1984229469. The cubic root of 12251389 is about 230.5305270573.

The spelling of 12251389 in words is "twelve million, two hundred fifty-one thousand, three hundred eighty-nine".