12250442509 has 2 divisors, whose sum is σ = 12250442510. Its totient is φ = 12250442508.

The previous prime is 12250442461. The next prime is 12250442621. The reversal of 12250442509 is 90524405221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12051209284 + 199233225 = 109778^2 + 14115^2 .

It is a cyclic number.

It is not a de Polignac number, because 12250442509 - 2²⁷ = 12116224781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12250442909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6125221254 + 6125221255.

It is an arithmetic number, because the mean of its divisors is an integer number (6125221255).

Almost surely, 2^12250442509 is an apocalyptic number.

It is an amenable number.

12250442509 is a deficient number, since it is larger than the sum of its proper divisors (1).

12250442509 is an equidigital number, since it uses as much as digits as its factorization.

12250442509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 12250442509 in words is "twelve billion, two hundred fifty million, four hundred forty-two thousand, five hundred nine".