25820216 has 16 divisors (see below), whose sum is σ = 48500640. Its totient is φ = 12886720.

The previous prime is 25820209. The next prime is 25820219. The reversal of 25820216 is 61202852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25820219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2321 + ... + 7551.

It is an arithmetic number, because the mean of its divisors is an integer number (3031290).

Almost surely, 2^25820216 is an apocalyptic number.

It is an amenable number.

25820216 is a deficient number, since it is larger than the sum of its proper divisors (22680424).

25820216 is a wasteful number, since it uses less digits than its factorization.

25820216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5850 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 25820216 is about 5081.3596605633. The cubic root of 25820216 is about 295.5651943348.

The spelling of 25820216 in words is "twenty-five million, eight hundred twenty thousand, two hundred sixteen".