13525235418 has 16 divisors (see below), whose sum is σ = 27082722240. Its totient is φ = 4503036576.

The previous prime is 13525235407. The next prime is 13525235419. The reversal of 13525235418 is 81453252531.

It is a super-2 number, since 2×13525235418² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13525235419) 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, 1338355 + ... + 1348422.

It is an arithmetic number, because the mean of its divisors is an integer number (1692670140).

Almost surely, 2^13525235418 is an apocalyptic number.

13525235418 is an abundant number, since it is smaller than the sum of its proper divisors (13557486822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13525235418 is a wasteful number, since it uses less digits than its factorization.

13525235418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687621.

The product of its digits is 144000, while the sum is 39.

Adding to 13525235418 its reverse (81453252531), we get a palindrome (94978487949).

The spelling of 13525235418 in words is "thirteen billion, five hundred twenty-five million, two hundred thirty-five thousand, four hundred eighteen".