16523442125 has 8 divisors (see below), whose sum is σ = 20621255928. Its totient is φ = 13218753600.

The previous prime is 16523442097. The next prime is 16523442139. The reversal of 16523442125 is 52124432561.

It can be written as a sum of positive squares in 4 ways, for example, as 2859468676 + 13663973449 = 53474^2 + 116893^2 .

It is not a de Polignac number, because 16523442125 - 2¹⁶ = 16523376589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66093644 + ... + 66093893.

It is an arithmetic number, because the mean of its divisors is an integer number (2577656991).

Almost surely, 2^16523442125 is an apocalyptic number.

It is an amenable number.

16523442125 is a deficient number, since it is larger than the sum of its proper divisors (4097813803).

16523442125 is an equidigital number, since it uses as much as digits as its factorization.

16523442125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132187552 (or 132187542 counting only the distinct ones).

The product of its digits is 57600, while the sum is 35.

Adding to 16523442125 its reverse (52124432561), we get a palindrome (68647874686).

The spelling of 16523442125 in words is "sixteen billion, five hundred twenty-three million, four hundred forty-two thousand, one hundred twenty-five".