13825548670509 has 16 divisors (see below), whose sum is σ = 20516037834240. Its totient is φ = 9201847868640.

The previous prime is 13825548670499. The next prime is 13825548670513. The reversal of 13825548670509 is 90507684552831.

13825548670509 is a `hidden beast` number, since 1 + 3 + 8 + 2 + 5 + 54 + 8 + 6 + 70 + 509 = 666.

It is not a de Polignac number, because 13825548670509 - 2³³ = 13816958735917 is a prime.

It is a super-2 number, since 2×13825548670509² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13825548670529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421777152 + ... + 421809929.

It is an arithmetic number, because the mean of its divisors is an integer number (1282252364640).

It is a 2-persistent number, because it is pandigital, and so is 2⋅13825548670509 = 27651097341018, but 3⋅13825548670509 = 41476646011527 is not.

Almost surely, 2^{13825548670509} is an apocalyptic number.

It is an amenable number.

13825548670509 is a deficient number, since it is larger than the sum of its proper divisors (6690489163731).

13825548670509 is an equidigital number, since it uses as much as digits as its factorization.

13825548670509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843587697 (or 843587691 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 63.

The spelling of 13825548670509 in words is "thirteen trillion, eight hundred twenty-five billion, five hundred forty-eight million, six hundred seventy thousand, five hundred nine".