25303312 has 40 divisors (see below), whose sum is σ = 52943040. Its totient is φ = 11679360.

The previous prime is 25303309. The next prime is 25303319. The reversal of 25303312 is 21330352.

It is a self number, because there is not a number n which added to its sum of digits gives 25303312.

It is not an unprimeable number, because it can be changed into a prime (25303319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9487 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (1323576).

Almost surely, 2^25303312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25303312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26471520).

25303312 is an abundant number, since it is smaller than the sum of its proper divisors (27639728).

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

25303312 is a wasteful number, since it uses less digits than its factorization.

25303312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 25303312 is about 5030.2397557174. The cubic root of 25303312 is about 293.5795430562.

Adding to 25303312 its reverse (21330352), we get a palindrome (46633664).

The spelling of 25303312 in words is "twenty-five million, three hundred three thousand, three hundred twelve".