26400225 has 24 divisors (see below), whose sum is σ = 44184672. Its totient is φ = 13907200.

The previous prime is 26400223. The next prime is 26400233. The reversal of 26400225 is 52200462.

It is not a de Polignac number, because 26400225 - 2¹ = 26400223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26400223) 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 23 ways as a sum of consecutive naturals, for example, 4105 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (1841028).

Almost surely, 2^26400225 is an apocalyptic number.

26400225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26400225 is a deficient number, since it is larger than the sum of its proper divisors (17784447).

26400225 is a wasteful number, since it uses less digits than its factorization.

26400225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4337 (or 4332 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 26400225 is about 5138.1149267022. The cubic root of 26400225 is about 297.7619565006.

Adding to 26400225 its reverse (52200462), we get a palindrome (78600687).

The spelling of 26400225 in words is "twenty-six million, four hundred thousand, two hundred twenty-five".