16581625025 has 24 divisors (see below), whose sum is σ = 23506650240. Its totient is φ = 11366328960.

The previous prime is 16581625013. The next prime is 16581625031. The reversal of 16581625025 is 52052618561.

16581625025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16581625025 - 2³² = 12286657729 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 546812 + ... + 576338.

It is an arithmetic number, because the mean of its divisors is an integer number (979443760).

Almost surely, 2^16581625025 is an apocalyptic number.

It is an amenable number.

16581625025 is a deficient number, since it is larger than the sum of its proper divisors (6925025215).

16581625025 is a wasteful number, since it uses less digits than its factorization.

16581625025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32753 (or 32748 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 16581625025 in words is "sixteen billion, five hundred eighty-one million, six hundred twenty-five thousand, twenty-five".