25920216 has 192 divisors, whose sum is σ = 87552000. Its totient is φ = 7076160.

The previous prime is 25920211. The next prime is 25920217. The reversal of 25920216 is 61202952.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25920216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25920211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 328065 + ... + 328143.

It is an arithmetic number, because the mean of its divisors is an integer number (456000).

Almost surely, 2^25920216 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 25920216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43776000).

25920216 is an abundant number, since it is smaller than the sum of its proper divisors (61631784).

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

25920216 is a wasteful number, since it uses less digits than its factorization.

25920216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25920216 is about 5091.1900377024. The cubic root of 25920216 is about 295.9462709881.

The spelling of 25920216 in words is "twenty-five million, nine hundred twenty thousand, two hundred sixteen".