25544211479201 has 2 divisors, whose sum is σ = 25544211479202. Its totient is φ = 25544211479200.

The previous prime is 25544211479113. The next prime is 25544211479203. The reversal of 25544211479201 is 10297411244552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13798847502400 + 11745363976801 = 3714680^2 + 3427151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25544211479201 is a prime.

It is a Sophie Germain prime.

Together with 25544211479203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25544211479203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12772105739600 + 12772105739601.

It is an arithmetic number, because the mean of its divisors is an integer number (12772105739601).

Almost surely, 2^{25544211479201} is an apocalyptic number.

It is an amenable number.

25544211479201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25544211479201 is an equidigital number, since it uses as much as digits as its factorization.

25544211479201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 25544211479201 in words is "twenty-five trillion, five hundred forty-four billion, two hundred eleven million, four hundred seventy-nine thousand, two hundred one".