25116616 has 48 divisors (see below), whose sum is σ = 58020300. Its totient is φ = 10128384.

The previous prime is 25116607. The next prime is 25116617. The reversal of 25116616 is 61661152.

It can be written as a sum of positive squares in 2 ways, for example, as 22524516 + 2592100 = 4746^2 + 1610^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (25116617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4780 + ... + 8548.

Almost surely, 2^25116616 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 25116616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29010150).

25116616 is an abundant number, since it is smaller than the sum of its proper divisors (32903684).

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

25116616 is a wasteful number, since it uses less digits than its factorization.

25116616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 3795 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 25116616 is about 5011.6480323343. The cubic root of 25116616 is about 292.8557183920.

Adding to 25116616 its reverse (61661152), we get a palindrome (86777768).

The spelling of 25116616 in words is "twenty-five million, one hundred sixteen thousand, six hundred sixteen".