25683216 has 80 divisors (see below), whose sum is σ = 72495360. Its totient is φ = 7787520.

The previous prime is 25683211. The next prime is 25683223. The reversal of 25683216 is 61238652.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25683211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49036 + ... + 49556.

It is an arithmetic number, because the mean of its divisors is an integer number (906192).

Almost surely, 2^25683216 is an apocalyptic number.

25683216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25683216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36247680).

25683216 is an abundant number, since it is smaller than the sum of its proper divisors (46812144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25683216 is a wasteful number, since it uses less digits than its factorization.

25683216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 618 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 25683216 is about 5067.8610872833. The cubic root of 25683216 is about 295.0415186225.

The spelling of 25683216 in words is "twenty-five million, six hundred eighty-three thousand, two hundred sixteen".