13525442109 has 12 divisors (see below), whose sum is σ = 19550159200. Its totient is φ = 9010772424.

The previous prime is 13525442101. The next prime is 13525442111. The reversal of 13525442109 is 90124452531.

13525442109 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 544 + 2 + 109 = 666.

It is not a de Polignac number, because 13525442109 - 2³ = 13525442101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13525442101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501889 + ... + 528150.

Almost surely, 2^13525442109 is an apocalyptic number.

It is an amenable number.

13525442109 is a deficient number, since it is larger than the sum of its proper divisors (6024717091).

13525442109 is a wasteful number, since it uses less digits than its factorization.

13525442109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031504 (or 1031501 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 13525442109 in words is "thirteen billion, five hundred twenty-five million, four hundred forty-two thousand, one hundred nine".