25866938 has 8 divisors (see below), whose sum is σ = 38839188. Its totient is φ = 12920544.

The previous prime is 25866931. The next prime is 25866947. The reversal of 25866938 is 83966852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17497489 + 8369449 = 4183^2 + 2893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25866892 and 25866901.

It is not an unprimeable number, because it can be changed into a prime (25866931) 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 3 ways as a sum of consecutive naturals, for example, 3731 + ... + 8102.

Almost surely, 2^25866938 is an apocalyptic number.

25866938 is a deficient number, since it is larger than the sum of its proper divisors (12972250).

25866938 is a wasteful number, since it uses less digits than its factorization.

25866938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12928.

The product of its digits is 622080, while the sum is 47.

The square root of 25866938 is about 5085.9549742403. The cubic root of 25866938 is about 295.7433632025.

The spelling of 25866938 in words is "twenty-five million, eight hundred sixty-six thousand, nine hundred thirty-eight".