12280037257 has 2 divisors, whose sum is σ = 12280037258. Its totient is φ = 12280037256.

The previous prime is 12280037243. The next prime is 12280037267. The reversal of 12280037257 is 75273008221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8448551056 + 3831486201 = 91916^2 + 61899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12280037257 is a prime.

It is not a weakly prime, because it can be changed into another prime (12280037267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6140018628 + 6140018629.

It is an arithmetic number, because the mean of its divisors is an integer number (6140018629).

Almost surely, 2^12280037257 is an apocalyptic number.

It is an amenable number.

12280037257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12280037257 is an equidigital number, since it uses as much as digits as its factorization.

12280037257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 12280037257 in words is "twelve billion, two hundred eighty million, thirty-seven thousand, two hundred fifty-seven".