13531025442 has 96 divisors (see below), whose sum is σ = 30960921600. Its totient is φ = 3909436960.

The previous prime is 13531025411. The next prime is 13531025471. The reversal of 13531025442 is 24452013531.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20913163 + ... + 20913809.

It is an arithmetic number, because the mean of its divisors is an integer number (322509600).

Almost surely, 2^13531025442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13531025442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15480460800).

13531025442 is an abundant number, since it is smaller than the sum of its proper divisors (17429896158).

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

13531025442 is a wasteful number, since it uses less digits than its factorization.

13531025442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1285 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 13531025442 its reverse (24452013531), we get a palindrome (37983038973).

The spelling of 13531025442 in words is "thirteen billion, five hundred thirty-one million, twenty-five thousand, four hundred forty-two".