25930816 has 28 divisors (see below), whose sum is σ = 51999388. Its totient is φ = 12828672.

The previous prime is 25930811. The next prime is 25930873. The reversal of 25930816 is 61803952.

It can be written as a sum of positive squares in 2 ways, for example, as 18662400 + 7268416 = 4320^2 + 2696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25930811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4120 + ... + 8296.

It is an arithmetic number, because the mean of its divisors is an integer number (1857121).

Almost surely, 2^25930816 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 25930816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25999694).

25930816 is an abundant number, since it is smaller than the sum of its proper divisors (26068572).

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

25930816 is an equidigital number, since it uses as much as digits as its factorization.

25930816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286 (or 4276 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25930816 is about 5092.2309452734. The cubic root of 25930816 is about 295.9866076239.

The spelling of 25930816 in words is "twenty-five million, nine hundred thirty thousand, eight hundred sixteen".