25704256219 has 2 divisors, whose sum is σ = 25704256220. Its totient is φ = 25704256218.

The previous prime is 25704256217. The next prime is 25704256223. The reversal of 25704256219 is 91265240752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25704256219 - 2¹ = 25704256217 is a prime.

It is a super-2 number, since 2×25704256219² (a number of 22 digits) contains 22 as substring.

Together with 25704256217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25704256213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852128109 + 12852128110.

It is an arithmetic number, because the mean of its divisors is an integer number (12852128110).

Almost surely, 2^25704256219 is an apocalyptic number.

25704256219 is a deficient number, since it is larger than the sum of its proper divisors (1).

25704256219 is an equidigital number, since it uses as much as digits as its factorization.

25704256219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 25704256219 in words is "twenty-five billion, seven hundred four million, two hundred fifty-six thousand, two hundred nineteen".