25689768 has 32 divisors (see below), whose sum is σ = 69165600. Its totient is φ = 7904448.

The previous prime is 25689751. The next prime is 25689809. The reversal of 25689768 is 86798652.

It is a self number, because there is not a number n which added to its sum of digits gives 25689768.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40858 + ... + 41481.

It is an arithmetic number, because the mean of its divisors is an integer number (2161425).

Almost surely, 2^25689768 is an apocalyptic number.

It is an amenable number.

25689768 is an abundant number, since it is smaller than the sum of its proper divisors (43475832).

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

25689768 is a wasteful number, since it uses less digits than its factorization.

25689768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82361 (or 82357 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 25689768 is about 5068.5074726195. The cubic root of 25689768 is about 295.0666056634.

The spelling of 25689768 in words is "twenty-five million, six hundred eighty-nine thousand, seven hundred sixty-eight".