13525442005 has 4 divisors (see below), whose sum is σ = 16230530412. Its totient is φ = 10820353600.

The previous prime is 13525441991. The next prime is 13525442089. The reversal of 13525442005 is 50024452531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2571098436 + 10954343569 = 50706^2 + 104663^2 .

It is not a de Polignac number, because 13525442005 - 2¹¹ = 13525439957 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 3 ways as a sum of consecutive naturals, for example, 1352544196 + ... + 1352544205.

It is an arithmetic number, because the mean of its divisors is an integer number (4057632603).

Almost surely, 2^13525442005 is an apocalyptic number.

It is an amenable number.

13525442005 is a deficient number, since it is larger than the sum of its proper divisors (2705088407).

13525442005 is an equidigital number, since it uses as much as digits as its factorization.

13525442005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705088406.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 13525442005 its reverse (50024452531), we get a palindrome (63549894536).

The spelling of 13525442005 in words is "thirteen billion, five hundred twenty-five million, four hundred forty-two thousand, five".