13525145136 has 90 divisors (see below), whose sum is σ = 39948817740. Its totient is φ = 4271082048.

The previous prime is 13525145111. The next prime is 13525145159. The reversal of 13525145136 is 63154152531.

13525145136 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 514 + 5 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13525145136.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78106 + ... + 182073.

Almost surely, 2^13525145136 is an apocalyptic number.

13525145136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13525145136 is an abundant number, since it is smaller than the sum of its proper divisors (26423672604).

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

13525145136 is a wasteful number, since it uses less digits than its factorization.

13525145136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260231 (or 260203 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

Adding to 13525145136 its reverse (63154152531), we get a palindrome (76679297667).

The spelling of 13525145136 in words is "thirteen billion, five hundred twenty-five million, one hundred forty-five thousand, one hundred thirty-six".