13252237521 has 8 divisors (see below), whose sum is σ = 17726103840. Its totient is φ = 8806598112.

The previous prime is 13252237519. The next prime is 13252237567. The reversal of 13252237521 is 12573225231.

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

It is not a de Polignac number, because 13252237521 - 2¹ = 13252237519 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13252237721) 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, 7055631 + ... + 7057508.

It is an arithmetic number, because the mean of its divisors is an integer number (2215762980).

Almost surely, 2^13252237521 is an apocalyptic number.

It is an amenable number.

13252237521 is a deficient number, since it is larger than the sum of its proper divisors (4473866319).

13252237521 is a wasteful number, since it uses less digits than its factorization.

13252237521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113455.

The product of its digits is 25200, while the sum is 33.

The spelling of 13252237521 in words is "thirteen billion, two hundred fifty-two million, two hundred thirty-seven thousand, five hundred twenty-one".