12500549 has 2 divisors, whose sum is σ = 12500550. Its totient is φ = 12500548.

The previous prime is 12500539. The next prime is 12500581. The reversal of 12500549 is 94500521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10857025 + 1643524 = 3295^2 + 1282^2 .

It is an emirp because it is prime and its reverse (94500521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12500549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12500519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250274 + 6250275.

It is an arithmetic number, because the mean of its divisors is an integer number (6250275).

Almost surely, 2^12500549 is an apocalyptic number.

It is an amenable number.

12500549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12500549 is an equidigital number, since it uses as much as digits as its factorization.

12500549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 12500549 is about 3535.6115454048. The cubic root of 12500549 is about 232.0828392739.

The spelling of 12500549 in words is "twelve million, five hundred thousand, five hundred forty-nine".