26409025 has 6 divisors (see below), whose sum is σ = 32747222. Its totient is φ = 21127200.

The previous prime is 26409017. The next prime is 26409029. The reversal of 26409025 is 52090462.

It can be written as a sum of positive squares in 3 ways, for example, as 266256 + 26142769 = 516^2 + 5113^2 .

It is not a de Polignac number, because 26409025 - 2³ = 26409017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26408984 and 26409002.

It is not an unprimeable number, because it can be changed into a prime (26409029) 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 5 ways as a sum of consecutive naturals, for example, 528156 + ... + 528205.

Almost surely, 2^26409025 is an apocalyptic number.

26409025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26409025 is a deficient number, since it is larger than the sum of its proper divisors (6338197).

26409025 is a wasteful number, since it uses less digits than its factorization.

26409025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056371 (or 1056366 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 26409025 is about 5138.9712005420. The cubic root of 26409025 is about 297.7950372051.

Adding to 26409025 its reverse (52090462), we get a palindrome (78499487).

The spelling of 26409025 in words is "twenty-six million, four hundred nine thousand, twenty-five".