25318650211201 has 2 divisors, whose sum is σ = 25318650211202. Its totient is φ = 25318650211200.

The previous prime is 25318650211199. The next prime is 25318650211247. The reversal of 25318650211201 is 10211205681352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18068016921201 + 7250633290000 = 4250649^2 + 2692700^2 .

It is a cyclic number.

It is not a de Polignac number, because 25318650211201 - 2¹ = 25318650211199 is a prime.

Together with 25318650211199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25318650211501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12659325105600 + 12659325105601.

It is an arithmetic number, because the mean of its divisors is an integer number (12659325105601).

Almost surely, 2^{25318650211201} is an apocalyptic number.

It is an amenable number.

25318650211201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25318650211201 is an equidigital number, since it uses as much as digits as its factorization.

25318650211201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

Adding to 25318650211201 its reverse (10211205681352), we get a palindrome (35529855892553).

The spelling of 25318650211201 in words is "twenty-five trillion, three hundred eighteen billion, six hundred fifty million, two hundred eleven thousand, two hundred one".