13525340249 has 4 divisors (see below), whose sum is σ = 13656654336. Its totient is φ = 13394026164.

The previous prime is 13525340239. The next prime is 13525340251. The reversal of 13525340249 is 94204352531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13525340249 - 2¹⁶ = 13525274713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13525340239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65656889 + ... + 65657094.

It is an arithmetic number, because the mean of its divisors is an integer number (3414163584).

Almost surely, 2^13525340249 is an apocalyptic number.

It is an amenable number.

13525340249 is a deficient number, since it is larger than the sum of its proper divisors (131314087).

13525340249 is a wasteful number, since it uses less digits than its factorization.

13525340249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131314086.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 13525340249 in words is "thirteen billion, five hundred twenty-five million, three hundred forty thousand, two hundred forty-nine".