25603116 has 96 divisors (see below), whose sum is σ = 75425280. Its totient is φ = 6621120.

The previous prime is 25603091. The next prime is 25603121. The reversal of 25603116 is 61130652.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 111690 + ... + 111918.

It is an arithmetic number, because the mean of its divisors is an integer number (785680).

Almost surely, 2^25603116 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 25603116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37712640).

25603116 is an abundant number, since it is smaller than the sum of its proper divisors (49822164).

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

25603116 is a wasteful number, since it uses less digits than its factorization.

25603116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25603116 is about 5059.9521736870. The cubic root of 25603116 is about 294.7344771583.

Adding to 25603116 its reverse (61130652), we get a palindrome (86733768).

The spelling of 25603116 in words is "twenty-five million, six hundred three thousand, one hundred sixteen".