26400425 has 12 divisors (see below), whose sum is σ = 33622476. Its totient is φ = 20548800.

The previous prime is 26400421. The next prime is 26400463. The reversal of 26400425 is 52400462.

It can be written as a sum of positive squares in 6 ways, for example, as 63001 + 26337424 = 251^2 + 5132^2 .

It is not a de Polignac number, because 26400425 - 2² = 26400421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26400425.

It is not an unprimeable number, because it can be changed into a prime (26400421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13346 + ... + 15195.

It is an arithmetic number, because the mean of its divisors is an integer number (2801873).

Almost surely, 2^26400425 is an apocalyptic number.

26400425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26400425 is a deficient number, since it is larger than the sum of its proper divisors (7222051).

26400425 is a wasteful number, since it uses less digits than its factorization.

26400425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28588 (or 28583 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 26400425 is about 5138.1343890560. The cubic root of 26400425 is about 297.7627084164.

Adding to 26400425 its reverse (52400462), we get a palindrome (78800887).

The spelling of 26400425 in words is "twenty-six million, four hundred thousand, four hundred twenty-five".