26255987 has 2 divisors, whose sum is σ = 26255988. Its totient is φ = 26255986.

The previous prime is 26255953. The next prime is 26255989. The reversal of 26255987 is 78955262.

26255987 is nontrivially palindromic in base 15.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26255987 is a prime.

Together with 26255989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26255989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13127993 + 13127994.

It is an arithmetic number, because the mean of its divisors is an integer number (13127994).

Almost surely, 2^26255987 is an apocalyptic number.

26255987 is a deficient number, since it is larger than the sum of its proper divisors (1).

26255987 is an equidigital number, since it uses as much as digits as its factorization.

26255987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 26255987 is about 5124.0596210427. The cubic root of 26255987 is about 297.2186903719.

The spelling of 26255987 in words is "twenty-six million, two hundred fifty-five thousand, nine hundred eighty-seven".