25991764367 has 2 divisors, whose sum is σ = 25991764368. Its totient is φ = 25991764366.

The previous prime is 25991764333. The next prime is 25991764411. The reversal of 25991764367 is 76346719952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25991764367 - 2⁸ = 25991764111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25991064367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12995882183 + 12995882184.

It is an arithmetic number, because the mean of its divisors is an integer number (12995882184).

Almost surely, 2^25991764367 is an apocalyptic number.

25991764367 is a deficient number, since it is larger than the sum of its proper divisors (1).

25991764367 is an equidigital number, since it uses as much as digits as its factorization.

25991764367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 59.

The spelling of 25991764367 in words is "twenty-five billion, nine hundred ninety-one million, seven hundred sixty-four thousand, three hundred sixty-seven".