25511316648133 has 2 divisors, whose sum is σ = 25511316648134. Its totient is φ = 25511316648132.

The previous prime is 25511316648131. The next prime is 25511316648151. The reversal of 25511316648133 is 33184661311552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23089735611684 + 2421581036449 = 4805178^2 + 1556143^2 .

It is a cyclic number.

It is not a de Polignac number, because 25511316648133 - 2¹ = 25511316648131 is a prime.

It is a super-2 number, since 2×25511316648133² (a number of 28 digits) contains 22 as substring.

Together with 25511316648131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25511316648131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12755658324066 + 12755658324067.

It is an arithmetic number, because the mean of its divisors is an integer number (12755658324067).

Almost surely, 2^{25511316648133} is an apocalyptic number.

It is an amenable number.

25511316648133 is a deficient number, since it is larger than the sum of its proper divisors (1).

25511316648133 is an equidigital number, since it uses as much as digits as its factorization.

25511316648133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

Adding to 25511316648133 its reverse (33184661311552), we get a palindrome (58695977959685).

The spelling of 25511316648133 in words is "twenty-five trillion, five hundred eleven billion, three hundred sixteen million, six hundred forty-eight thousand, one hundred thirty-three".