16525585441 has 4 divisors (see below), whose sum is σ = 16530552900. Its totient is φ = 16520617984.

The previous prime is 16525585423. The next prime is 16525585469. The reversal of 16525585441 is 14458552561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14458552561 = 919 ⋅15732919.

It can be written as a sum of positive squares in 2 ways, for example, as 2355063841 + 14170521600 = 48529^2 + 119040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16525585441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16525585391 and 16525585400.

It is not an unprimeable number, because it can be changed into a prime (16525585411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478736 + ... + 2485393.

It is an arithmetic number, because the mean of its divisors is an integer number (4132638225).

Almost surely, 2^16525585441 is an apocalyptic number.

It is an amenable number.

16525585441 is a deficient number, since it is larger than the sum of its proper divisors (4967459).

16525585441 is an equidigital number, since it uses as much as digits as its factorization.

16525585441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967458.

The product of its digits is 960000, while the sum is 46.

The spelling of 16525585441 in words is "sixteen billion, five hundred twenty-five million, five hundred eighty-five thousand, four hundred forty-one".