25867468391 has 2 divisors, whose sum is σ = 25867468392. Its totient is φ = 25867468390.

The previous prime is 25867468381. The next prime is 25867468441. The reversal of 25867468391 is 19386476852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25867468391 - 2⁶ = 25867468327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25867468391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25867468321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12933734195 + 12933734196.

It is an arithmetic number, because the mean of its divisors is an integer number (12933734196).

Almost surely, 2^25867468391 is an apocalyptic number.

25867468391 is a deficient number, since it is larger than the sum of its proper divisors (1).

25867468391 is an equidigital number, since it uses as much as digits as its factorization.

25867468391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 59.

The spelling of 25867468391 in words is "twenty-five billion, eight hundred sixty-seven million, four hundred sixty-eight thousand, three hundred ninety-one".