25683816 has 32 divisors (see below), whose sum is σ = 64346400. Its totient is φ = 8543040.

The previous prime is 25683803. The next prime is 25683817. The reversal of 25683816 is 61838652.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (25683817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15055 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (2010825).

Almost surely, 2^25683816 is an apocalyptic number.

It is an amenable number.

25683816 is an abundant number, since it is smaller than the sum of its proper divisors (38662584).

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

25683816 is a wasteful number, since it uses less digits than its factorization.

25683816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2285 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 25683816 is about 5067.9202835088. The cubic root of 25683816 is about 295.0438161480.

The spelling of 25683816 in words is "twenty-five million, six hundred eighty-three thousand, eight hundred sixteen".