25555175210317 has 2 divisors, whose sum is σ = 25555175210318. Its totient is φ = 25555175210316.

The previous prime is 25555175210297. The next prime is 25555175210321. The reversal of 25555175210317 is 71301257155552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21362615924841 + 4192559285476 = 4621971^2 + 2047574^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25555175210317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25555175217317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12777587605158 + 12777587605159.

It is an arithmetic number, because the mean of its divisors is an integer number (12777587605159).

Almost surely, 2^{25555175210317} is an apocalyptic number.

It is an amenable number.

25555175210317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25555175210317 is an equidigital number, since it uses as much as digits as its factorization.

25555175210317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837500, while the sum is 49.

The spelling of 25555175210317 in words is "twenty-five trillion, five hundred fifty-five billion, one hundred seventy-five million, two hundred ten thousand, three hundred seventeen".