26485681 has 4 divisors (see below), whose sum is σ = 26496000. Its totient is φ = 26475364.

The previous prime is 26485663. The next prime is 26485709. The reversal of 26485681 is 18658462.

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 a cyclic number.

It is not a de Polignac number, because 26485681 - 2⁹ = 26485169 is a prime.

It is a super-2 number, since 2×26485681² = 1402982596067522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26485181) 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 in 3 ways as a sum of consecutive naturals, for example, 2040 + ... + 7558.

It is an arithmetic number, because the mean of its divisors is an integer number (6624000).

Almost surely, 2^26485681 is an apocalyptic number.

It is an amenable number.

26485681 is a deficient number, since it is larger than the sum of its proper divisors (10319).

26485681 is an equidigital number, since it uses as much as digits as its factorization.

26485681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10318.

The product of its digits is 92160, while the sum is 40.

The square root of 26485681 is about 5146.4240983425. The cubic root of 26485681 is about 298.0828898736.

The spelling of 26485681 in words is "twenty-six million, four hundred eighty-five thousand, six hundred eighty-one".