26856425 has 12 divisors (see below), whose sum is σ = 33931980. Its totient is φ = 21078720.

The previous prime is 26856421. The next prime is 26856437. The reversal of 26856425 is 52465862.

It can be written as a sum of positive squares in 6 ways, for example, as 364816 + 26491609 = 604^2 + 5147^2 .

It is not a de Polignac number, because 26856425 - 2² = 26856421 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26856421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8810 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (2827665).

Almost surely, 2^26856425 is an apocalyptic number.

26856425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26856425 is a deficient number, since it is larger than the sum of its proper divisors (7075555).

26856425 is a wasteful number, since it uses less digits than its factorization.

26856425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20332 (or 20327 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 26856425 is about 5182.3184965805. The cubic root of 26856425 is about 299.4672953866.

The spelling of 26856425 in words is "twenty-six million, eight hundred fifty-six thousand, four hundred twenty-five".