25940836 has 6 divisors (see below), whose sum is σ = 45396470. Its totient is φ = 12970416.

The previous prime is 25940791. The next prime is 25940839. The reversal of 25940836 is 63804952.

It can be written as a sum of positive squares in only one way, i.e., 22982436 + 2958400 = 4794^2 + 1720^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25940795 and 25940804.

It is not an unprimeable number, because it can be changed into a prime (25940839) 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 as a sum of consecutive naturals, namely, 3242601 + ... + 3242608.

Almost surely, 2^25940836 is an apocalyptic number.

It is an amenable number.

25940836 is a deficient number, since it is larger than the sum of its proper divisors (19455634).

25940836 is a wasteful number, since it uses less digits than its factorization.

25940836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6485213 (or 6485211 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 25940836 is about 5093.2147019343. The cubic root of 25940836 is about 296.0247270553.

The spelling of 25940836 in words is "twenty-five million, nine hundred forty thousand, eight hundred thirty-six".