16018969625 has 32 divisors (see below), whose sum is σ = 20554818336. Its totient is φ = 12454963200.

The previous prime is 16018969607. The next prime is 16018969669. The reversal of 16018969625 is 52696981061.

It is a happy number.

16018969625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 1220733721 + 14798235904 = 34939^2 + 121648^2 .

It is not a de Polignac number, because 16018969625 - 2²² = 16014775321 is a prime.

It is a Duffinian number.

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 31 ways as a sum of consecutive naturals, for example, 6626417 + ... + 6628833.

It is an arithmetic number, because the mean of its divisors is an integer number (642338073).

Almost surely, 2^16018969625 is an apocalyptic number.

It is an amenable number.

16018969625 is a deficient number, since it is larger than the sum of its proper divisors (4535848711).

16018969625 is a wasteful number, since it uses less digits than its factorization.

16018969625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902 (or 3892 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 16018969625 in words is "sixteen billion, eighteen million, nine hundred sixty-nine thousand, six hundred twenty-five".