25861436 has 12 divisors (see below), whose sum is σ = 45323040. Its totient is φ = 12912000.

The previous prime is 25861427. The next prime is 25861439. The reversal of 25861436 is 63416852.

It is a junction number, because it is equal to n+sod(n) for n = 25861396 and 25861405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25861439) 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, 1301 + ... + 7308.

It is an arithmetic number, because the mean of its divisors is an integer number (3776920).

Almost surely, 2^25861436 is an apocalyptic number.

It is an amenable number.

25861436 is a deficient number, since it is larger than the sum of its proper divisors (19461604).

25861436 is a wasteful number, since it uses less digits than its factorization.

25861436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9364 (or 9362 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 25861436 is about 5085.4140441069. The cubic root of 25861436 is about 295.7223931213.

The spelling of 25861436 in words is "twenty-five million, eight hundred sixty-one thousand, four hundred thirty-six".