25816228 has 12 divisors (see below), whose sum is σ = 45310300. Its totient is φ = 12870432.

The previous prime is 25816223. The next prime is 25816253. The reversal of 25816228 is 82261852.

It can be written as a sum of positive squares in 2 ways, for example, as 14807104 + 11009124 = 3848^2 + 3318^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25816193 and 25816202.

It is not an unprimeable number, because it can be changed into a prime (25816223) 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, 7851 + ... + 10642.

Almost surely, 2^25816228 is an apocalyptic number.

It is an amenable number.

25816228 is a deficient number, since it is larger than the sum of its proper divisors (19494072).

25816228 is a wasteful number, since it uses less digits than its factorization.

25816228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18846 (or 18844 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 25816228 is about 5080.9672307544. The cubic root of 25816228 is about 295.5499766118.

The spelling of 25816228 in words is "twenty-five million, eight hundred sixteen thousand, two hundred twenty-eight".