16560025523 has 4 divisors (see below), whose sum is σ = 16598448288. Its totient is φ = 16521602760.

The previous prime is 16560025487. The next prime is 16560025607. The reversal of 16560025523 is 32552006561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32552006561 = 79817 ⋅407833.

It is a cyclic number.

It is not a de Polignac number, because 16560025523 - 2⁶ = 16560025459 is a prime.

It is a super-2 number, since 2×16560025523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16560015523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19210736 + ... + 19211597.

It is an arithmetic number, because the mean of its divisors is an integer number (4149612072).

Almost surely, 2^16560025523 is an apocalyptic number.

16560025523 is a deficient number, since it is larger than the sum of its proper divisors (38422765).

16560025523 is an equidigital number, since it uses as much as digits as its factorization.

16560025523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38422764.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 16560025523 in words is "sixteen billion, five hundred sixty million, twenty-five thousand, five hundred twenty-three".