25623616 has 28 divisors (see below), whose sum is σ = 51572160. Its totient is φ = 12629120.

The previous prime is 25623613. The next prime is 25623649. The reversal of 25623616 is 61632652.

25623616 is a modest number, since divided by 23616 gives 256 as remainder.

It is not an unprimeable number, because it can be changed into a prime (25623613) 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 3 ways as a sum of consecutive naturals, for example, 1725 + ... + 7363.

Almost surely, 2^25623616 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 25623616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25786080).

25623616 is an abundant number, since it is smaller than the sum of its proper divisors (25948544).

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

25623616 is an equidigital number, since it uses as much as digits as its factorization.

25623616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722 (or 5712 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 25623616 is about 5061.9774792071. The cubic root of 25623616 is about 294.8131192125.

The spelling of 25623616 in words is "twenty-five million, six hundred twenty-three thousand, six hundred sixteen".