26287265 has 4 divisors (see below), whose sum is σ = 31544724. Its totient is φ = 21029808.

The previous prime is 26287259. The next prime is 26287267. The reversal of 26287265 is 56278262.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6635776 + 19651489 = 2576^2 + 4433^2 .

It is a cyclic number.

It is not a de Polignac number, because 26287265 - 2⁶ = 26287201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26287267) 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, 2628722 + ... + 2628731.

It is an arithmetic number, because the mean of its divisors is an integer number (7886181).

Almost surely, 2^26287265 is an apocalyptic number.

It is an amenable number.

26287265 is a deficient number, since it is larger than the sum of its proper divisors (5257459).

26287265 is an equidigital number, since it uses as much as digits as its factorization.

26287265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257458.

The product of its digits is 80640, while the sum is 38.

The square root of 26287265 is about 5127.1107848378. The cubic root of 26287265 is about 297.3366662215.

The spelling of 26287265 in words is "twenty-six million, two hundred eighty-seven thousand, two hundred sixty-five".