26809025 has 12 divisors (see below), whose sum is σ = 33619500. Its totient is φ = 21204480.

The previous prime is 26808997. The next prime is 26809033. The reversal of 26809025 is 52090862.

It can be written as a sum of positive squares in 6 ways, for example, as 1175056 + 25633969 = 1084^2 + 5063^2 .

It is not a de Polignac number, because 26809025 - 2²² = 22614721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26808982 and 26809000.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3800 + ... + 8249.

It is an arithmetic number, because the mean of its divisors is an integer number (2801625).

Almost surely, 2^26809025 is an apocalyptic number.

26809025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26809025 is a deficient number, since it is larger than the sum of its proper divisors (6810475).

26809025 is a wasteful number, since it uses less digits than its factorization.

26809025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148 (or 12143 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 26809025 is about 5177.7432342672. The cubic root of 26809025 is about 299.2910109536.

Adding to 26809025 its reverse (52090862), we get a palindrome (78899887).

The spelling of 26809025 in words is "twenty-six million, eight hundred nine thousand, twenty-five".