13525135434 has 128 divisors (see below), whose sum is σ = 32389632000. Its totient is φ = 4168329984.

The previous prime is 13525135423. The next prime is 13525135439. The reversal of 13525135434 is 43453152531.

13525135434 is a `hidden beast` number, since 13 + 52 + 51 + 3 + 543 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (13525135439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20523397 + ... + 20524055.

It is an arithmetic number, because the mean of its divisors is an integer number (253044000).

Almost surely, 2^13525135434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13525135434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16194816000).

13525135434 is an abundant number, since it is smaller than the sum of its proper divisors (18864496566).

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

13525135434 is a wasteful number, since it uses less digits than its factorization.

13525135434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1043 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 13525135434 its reverse (43453152531), we get a palindrome (56978287965).

The spelling of 13525135434 in words is "thirteen billion, five hundred twenty-five million, one hundred thirty-five thousand, four hundred thirty-four".