26025985439 has 4 divisors (see below), whose sum is σ = 26452641000. Its totient is φ = 25599329880.

The previous prime is 26025985399. The next prime is 26025985441. The reversal of 26025985439 is 93458952062.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26025985439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26025985459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213327689 + ... + 213327810.

It is an arithmetic number, because the mean of its divisors is an integer number (6613160250).

Almost surely, 2^26025985439 is an apocalyptic number.

26025985439 is a deficient number, since it is larger than the sum of its proper divisors (426655561).

26025985439 is an equidigital number, since it uses as much as digits as its factorization.

26025985439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426655560.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 26025985439 in words is "twenty-six billion, twenty-five million, nine hundred eighty-five thousand, four hundred thirty-nine".