25506016 has 12 divisors (see below), whose sum is σ = 50215032. Its totient is φ = 12752992.

The previous prime is 25505989. The next prime is 25506049. The reversal of 25506016 is 61060552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398500 + ... + 398563.

It is an arithmetic number, because the mean of its divisors is an integer number (4184586).

Almost surely, 2^25506016 is an apocalyptic number.

It is an amenable number.

25506016 is a deficient number, since it is larger than the sum of its proper divisors (24709016).

25506016 is an equidigital number, since it uses as much as digits as its factorization.

25506016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797073 (or 797065 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 25506016 is about 5050.3481068140. The cubic root of 25506016 is about 294.3614109392.

Adding to 25506016 its reverse (61060552), we get a palindrome (86566568).

The spelling of 25506016 in words is "twenty-five million, five hundred six thousand, sixteen".