12505291 has 2 divisors, whose sum is σ = 12505292. Its totient is φ = 12505290.

The previous prime is 12505271. The next prime is 12505313. The reversal of 12505291 is 19250521.

12505291 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (19250521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12505291 - 2¹¹ = 12503243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12505231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6252645 + 6252646.

It is an arithmetic number, because the mean of its divisors is an integer number (6252646).

Almost surely, 2^12505291 is an apocalyptic number.

12505291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12505291 is an equidigital number, since it uses as much as digits as its factorization.

12505291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 12505291 is about 3536.2820871644. The cubic root of 12505291 is about 232.1121819237.

The spelling of 12505291 in words is "twelve million, five hundred five thousand, two hundred ninety-one".