16725120737 has 4 divisors (see below), whose sum is σ = 18011668500. Its totient is φ = 15438572976.

The previous prime is 16725120733. The next prime is 16725120779. The reversal of 16725120737 is 73702152761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73702152761 = 673 ⋅109512857.

It can be written as a sum of positive squares in 2 ways, for example, as 849372736 + 15875748001 = 29144^2 + 125999^2 .

It is a cyclic number.

It is not a de Polignac number, because 16725120737 - 2² = 16725120733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16725120694 and 16725120703.

It is not an unprimeable number, because it can be changed into a prime (16725120733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643273862 + ... + 643273887.

It is an arithmetic number, because the mean of its divisors is an integer number (4502917125).

Almost surely, 2^16725120737 is an apocalyptic number.

It is an amenable number.

16725120737 is a deficient number, since it is larger than the sum of its proper divisors (1286547763).

16725120737 is a wasteful number, since it uses less digits than its factorization.

16725120737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286547762.

The product of its (nonzero) digits is 123480, while the sum is 41.

The spelling of 16725120737 in words is "sixteen billion, seven hundred twenty-five million, one hundred twenty thousand, seven hundred thirty-seven".