12541396249 has 2 divisors, whose sum is σ = 12541396250. Its totient is φ = 12541396248.

The previous prime is 12541396237. The next prime is 12541396313. The reversal of 12541396249 is 94269314521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12302137225 + 239259024 = 110915^2 + 15468^2 .

It is a cyclic number.

It is not a de Polignac number, because 12541396249 - 2³¹ = 10393912601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12541396199 and 12541396208.

It is not a weakly prime, because it can be changed into another prime (12541396649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270698124 + 6270698125.

It is an arithmetic number, because the mean of its divisors is an integer number (6270698125).

Almost surely, 2^12541396249 is an apocalyptic number.

It is an amenable number.

12541396249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12541396249 is an equidigital number, since it uses as much as digits as its factorization.

12541396249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The spelling of 12541396249 in words is "twelve billion, five hundred forty-one million, three hundred ninety-six thousand, two hundred forty-nine".