25543314064013 has 2 divisors, whose sum is σ = 25543314064014. Its totient is φ = 25543314064012.

The previous prime is 25543314063997. The next prime is 25543314064097. The reversal of 25543314064013 is 31046041334552.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23114585064169 + 2428728999844 = 4807763^2 + 1558438^2 .

It is a cyclic number.

It is not a de Polignac number, because 25543314064013 - 2⁴ = 25543314063997 is a prime.

It is a super-3 number, since 3×25543314064013³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25543314064313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771657032006 + 12771657032007.

It is an arithmetic number, because the mean of its divisors is an integer number (12771657032007).

Almost surely, 2^{25543314064013} is an apocalyptic number.

It is an amenable number.

25543314064013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25543314064013 is an equidigital number, since it uses as much as digits as its factorization.

25543314064013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 25543314064013 its reverse (31046041334552), we get a palindrome (56589355398565).

The spelling of 25543314064013 in words is "twenty-five trillion, five hundred forty-three billion, three hundred fourteen million, sixty-four thousand, thirteen".