26255881 has 4 divisors (see below), whose sum is σ = 26266752. Its totient is φ = 26245012.

The previous prime is 26255869. The next prime is 26255897. The reversal of 26255881 is 18855262.

26255881 is a nontrivial binomial coefficient, being equal to C(7247, 2).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 26255881 - 2⁷ = 26255753 is a prime.

It is a super-2 number, since 2×26255881² = 1378742574172322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26255881.

It is not an unprimeable number, because it can be changed into a prime (26255851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (6566688).

Almost surely, 2^26255881 is an apocalyptic number.

26255881 is the 7246-th triangular number.

26255881 is the 2416-th centered nonagonal number.

It is an amenable number.

26255881 is a deficient number, since it is larger than the sum of its proper divisors (10871).

26255881 is an equidigital number, since it uses as much as digits as its factorization.

26255881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870.

The product of its digits is 38400, while the sum is 37.

The square root of 26255881 is about 5124.0492776709. The cubic root of 26255881 is about 297.2182903968.

The spelling of 26255881 in words is "twenty-six million, two hundred fifty-five thousand, eight hundred eighty-one".