25830216 has 24 divisors (see below), whose sum is σ = 69957030. Its totient is φ = 8610048.

The previous prime is 25830209. The next prime is 25830221. The reversal of 25830216 is 61203852.

It can be written as a sum of positive squares in only one way, i.e., 25704900 + 125316 = 5070^2 + 354^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 25830216.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179305 + ... + 179448.

Almost surely, 2^25830216 is an apocalyptic number.

It is an amenable number.

25830216 is an abundant number, since it is smaller than the sum of its proper divisors (44126814).

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

25830216 is a wasteful number, since it uses less digits than its factorization.

25830216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358765 (or 358758 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25830216 is about 5082.3435539129. The cubic root of 25830216 is about 295.6033462291.

The spelling of 25830216 in words is "twenty-five million, eight hundred thirty thousand, two hundred sixteen".