25227216 has 120 divisors (see below), whose sum is σ = 83566080. Its totient is φ = 6951168.

The previous prime is 25227199. The next prime is 25227217. The reversal of 25227216 is 61272252.

It is a super-2 number, since 2×25227216² = 1272824854221312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25227216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25227217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28801 + ... + 29663.

It is an arithmetic number, because the mean of its divisors is an integer number (696384).

Almost surely, 2^25227216 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 25227216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41783040).

25227216 is an abundant number, since it is smaller than the sum of its proper divisors (58338864).

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

25227216 is a wasteful number, since it uses less digits than its factorization.

25227216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 904 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 25227216 is about 5022.6702061752. The cubic root of 25227216 is about 293.2849484014.

Adding to 25227216 its reverse (61272252), we get a palindrome (86499468).

The spelling of 25227216 in words is "twenty-five million, two hundred twenty-seven thousand, two hundred sixteen".