25701618823 has 2 divisors, whose sum is σ = 25701618824. Its totient is φ = 25701618822.

The previous prime is 25701618757. The next prime is 25701618829. The reversal of 25701618823 is 32881610752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25701618823 - 2⁹ = 25701618311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25701618823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25701618829) 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, 12850809411 + 12850809412.

It is an arithmetic number, because the mean of its divisors is an integer number (12850809412).

Almost surely, 2^25701618823 is an apocalyptic number.

25701618823 is a deficient number, since it is larger than the sum of its proper divisors (1).

25701618823 is an equidigital number, since it uses as much as digits as its factorization.

25701618823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 25701618823 in words is "twenty-five billion, seven hundred one million, six hundred eighteen thousand, eight hundred twenty-three".