13525235331 has 4 divisors (see below), whose sum is σ = 18033647112. Its totient is φ = 9016823552.

The previous prime is 13525235299. The next prime is 13525235359. The reversal of 13525235331 is 13353252531.

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

It is a cyclic number.

It is not a de Polignac number, because 13525235331 - 2⁵ = 13525235299 is a prime.

It is a super-2 number, since 2×13525235331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13525235292 and 13525235301.

It is not an unprimeable number, because it can be changed into a prime (13525235371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254205886 + ... + 2254205891.

It is an arithmetic number, because the mean of its divisors is an integer number (4508411778).

Almost surely, 2^13525235331 is an apocalyptic number.

13525235331 is a deficient number, since it is larger than the sum of its proper divisors (4508411781).

13525235331 is an equidigital number, since it uses as much as digits as its factorization.

13525235331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508411780.

The product of its digits is 40500, while the sum is 33.

Adding to 13525235331 its reverse (13353252531), we get a palindrome (26878487862).

The spelling of 13525235331 in words is "thirteen billion, five hundred twenty-five million, two hundred thirty-five thousand, three hundred thirty-one".