16213408637525 has 24 divisors (see below), whose sum is σ = 21938425565184. Its totient is φ = 11788287382400.

The previous prime is 16213408637497. The next prime is 16213408637527. The reversal of 16213408637525 is 52573680431261.

It is not a de Polignac number, because 16213408637525 - 2¹⁰ = 16213408636501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16213408637527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7216469 + ... + 9192618.

It is an arithmetic number, because the mean of its divisors is an integer number (914101065216).

Almost surely, 2^{16213408637525} is an apocalyptic number.

It is an amenable number.

16213408637525 is a deficient number, since it is larger than the sum of its proper divisors (5725016927659).

16213408637525 is a wasteful number, since it uses less digits than its factorization.

16213408637525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16412701 (or 16412696 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 16213408637525 in words is "sixteen trillion, two hundred thirteen billion, four hundred eight million, six hundred thirty-seven thousand, five hundred twenty-five".