12501277433 has 2 divisors, whose sum is σ = 12501277434. Its totient is φ = 12501277432.

The previous prime is 12501277379. The next prime is 12501277463. The reversal of 12501277433 is 33477210521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11855507689 + 645769744 = 108883^2 + 25412^2 .

It is an emirp because it is prime and its reverse (33477210521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12501277433 - 2¹⁰ = 12501276409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12501277393 and 12501277402.

It is not a weakly prime, because it can be changed into another prime (12501277463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250638716 + 6250638717.

It is an arithmetic number, because the mean of its divisors is an integer number (6250638717).

Almost surely, 2^12501277433 is an apocalyptic number.

It is an amenable number.

12501277433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501277433 is an equidigital number, since it uses as much as digits as its factorization.

12501277433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 35.

Adding to 12501277433 its reverse (33477210521), we get a palindrome (45978487954).

The spelling of 12501277433 in words is "twelve billion, five hundred one million, two hundred seventy-seven thousand, four hundred thirty-three".