16217756234825 has 12 divisors (see below), whose sum is σ = 20110192961628. Its totient is φ = 12974091936000.

The previous prime is 16217756234819. The next prime is 16217756234833. The reversal of 16217756234825 is 52843265771261.

It can be written as a sum of positive squares in 6 ways, for example, as 932870085904 + 15284886148921 = 965852^2 + 3909589^2 .

It is not a de Polignac number, because 16217756234825 - 2¹⁴ = 16217756218441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162125 + ... + 5697525.

It is an arithmetic number, because the mean of its divisors is an integer number (1675849413469).

Almost surely, 2^{16217756234825} is an apocalyptic number.

It is an amenable number.

16217756234825 is a deficient number, since it is larger than the sum of its proper divisors (3892436726803).

16217756234825 is a wasteful number, since it uses less digits than its factorization.

16217756234825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652604 (or 5652599 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 59.

The spelling of 16217756234825 in words is "sixteen trillion, two hundred seventeen billion, seven hundred fifty-six million, two hundred thirty-four thousand, eight hundred twenty-five".