25986812 has 24 divisors (see below), whose sum is σ = 48371904. Its totient is φ = 12173312.

The previous prime is 25986809. The next prime is 25986827. The reversal of 25986812 is 21868952.

It is a self number, because there is not a number n which added to its sum of digits gives 25986812.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16733 + ... + 18219.

It is an arithmetic number, because the mean of its divisors is an integer number (2015496).

Almost surely, 2^25986812 is an apocalyptic number.

It is an amenable number.

25986812 is a deficient number, since it is larger than the sum of its proper divisors (22385092).

25986812 is a wasteful number, since it uses less digits than its factorization.

25986812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765 (or 1763 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 25986812 is about 5097.7261597697. The cubic root of 25986812 is about 296.1995093975.

The spelling of 25986812 in words is "twenty-five million, nine hundred eighty-six thousand, eight hundred twelve".