13525043521 has 8 divisors (see below), whose sum is σ = 14785401600. Its totient is φ = 12269820240.

The previous prime is 13525043513. The next prime is 13525043531. The reversal of 13525043521 is 12534052531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13525043521 - 2³ = 13525043513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13525043531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278186 + ... + 1288723.

It is an arithmetic number, because the mean of its divisors is an integer number (1848175200).

Almost surely, 2^13525043521 is an apocalyptic number.

13525043521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13525043521 is a deficient number, since it is larger than the sum of its proper divisors (1260358079).

13525043521 is a wasteful number, since it uses less digits than its factorization.

13525043521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567399.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 13525043521 in words is "thirteen billion, five hundred twenty-five million, forty-three thousand, five hundred twenty-one".