25887618377671 has 2 divisors, whose sum is σ = 25887618377672. Its totient is φ = 25887618377670.

The previous prime is 25887618377483. The next prime is 25887618377681. The reversal of 25887618377671 is 17677381678852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25887618377671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25887618377681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12943809188835 + 12943809188836.

It is an arithmetic number, because the mean of its divisors is an integer number (12943809188836).

Almost surely, 2^{25887618377671} is an apocalyptic number.

25887618377671 is a deficient number, since it is larger than the sum of its proper divisors (1).

25887618377671 is an equidigital number, since it uses as much as digits as its factorization.

25887618377671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327656960, while the sum is 76.

The spelling of 25887618377671 in words is "twenty-five trillion, eight hundred eighty-seven billion, six hundred eighteen million, three hundred seventy-seven thousand, six hundred seventy-one".