25943890067 has 4 divisors (see below), whose sum is σ = 26495887776. Its totient is φ = 25391892360.

The previous prime is 25943890061. The next prime is 25943890097. The reversal of 25943890067 is 76009834952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25943890067 - 2⁶ = 25943890003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25943890061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275998784 + ... + 275998877.

It is an arithmetic number, because the mean of its divisors is an integer number (6623971944).

Almost surely, 2^25943890067 is an apocalyptic number.

25943890067 is a deficient number, since it is larger than the sum of its proper divisors (551997709).

25943890067 is an equidigital number, since it uses as much as digits as its factorization.

25943890067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551997708.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 25943890067 in words is "twenty-five billion, nine hundred forty-three million, eight hundred ninety thousand, sixty-seven".