13525235436 has 24 divisors (see below), whose sum is σ = 31579015104. Its totient is φ = 4505535760.

The previous prime is 13525235419. The next prime is 13525235447. The reversal of 13525235436 is 63453252531.

It is a super-2 number, since 2×13525235436² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13525235394 and 13525235403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339870 + ... + 377573.

It is an arithmetic number, because the mean of its divisors is an integer number (1315792296).

Almost surely, 2^13525235436 is an apocalyptic number.

It is an amenable number.

13525235436 is an abundant number, since it is smaller than the sum of its proper divisors (18053779668).

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

13525235436 is a wasteful number, since it uses less digits than its factorization.

13525235436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719021 (or 719019 counting only the distinct ones).

The product of its digits is 324000, while the sum is 39.

Adding to 13525235436 its reverse (63453252531), we get a palindrome (76978487967).

The spelling of 13525235436 in words is "thirteen billion, five hundred twenty-five million, two hundred thirty-five thousand, four hundred thirty-six".