25331135513 has 2 divisors, whose sum is σ = 25331135514. Its totient is φ = 25331135512.

The previous prime is 25331135437. The next prime is 25331135563. The reversal of 25331135513 is 31553113352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15299710864 + 10031424649 = 123692^2 + 100157^2 .

It is a cyclic number.

It is not a de Polignac number, because 25331135513 - 2¹⁰ = 25331134489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25331135513.

It is not a weakly prime, because it can be changed into another prime (25331135563) 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, 12665567756 + 12665567757.

It is an arithmetic number, because the mean of its divisors is an integer number (12665567757).

Almost surely, 2^25331135513 is an apocalyptic number.

It is an amenable number.

25331135513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25331135513 is an equidigital number, since it uses as much as digits as its factorization.

25331135513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20250, while the sum is 32.

Adding to 25331135513 its reverse (31553113352), we get a palindrome (56884248865).

The spelling of 25331135513 in words is "twenty-five billion, three hundred thirty-one million, one hundred thirty-five thousand, five hundred thirteen".