16518447516025 has 96 divisors (see below), whose sum is σ = 25297463303168. Its totient is φ = 10419259910400.

The previous prime is 16518447516001. The next prime is 16518447516029. The reversal of 16518447516025 is 52061574481561.

It is not a de Polignac number, because 16518447516025 - 2¹⁷ = 16518447384953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16518447516029) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 2399887234 + ... + 2399894116.

Almost surely, 2^{16518447516025} is an apocalyptic number.

It is an amenable number.

16518447516025 is a deficient number, since it is larger than the sum of its proper divisors (8779015787143).

16518447516025 is a wasteful number, since it uses less digits than its factorization.

16518447516025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431 (or 10426 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 16518447516025 in words is "sixteen trillion, five hundred eighteen billion, four hundred forty-seven million, five hundred sixteen thousand, twenty-five".