13525123005 has 24 divisors (see below), whose sum is σ = 24077158872. Its totient is φ = 7018441344.

The previous prime is 13525122997. The next prime is 13525123049. The reversal of 13525123005 is 50032152531.

It is a happy number.

13525123005 is a `hidden beast` number, since 1 + 352 + 5 + 1 + 2 + 300 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2216714724 + 11308408281 = 47082^2 + 106341^2 .

It is not a de Polignac number, because 13525123005 - 2³ = 13525122997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13525123005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4059934 + ... + 4063263.

It is an arithmetic number, because the mean of its divisors is an integer number (1003214953).

Almost surely, 2^13525123005 is an apocalyptic number.

13525123005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13525123005 is a deficient number, since it is larger than the sum of its proper divisors (10552035867).

13525123005 is a wasteful number, since it uses less digits than its factorization.

13525123005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8123245 (or 8123242 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 13525123005 its reverse (50032152531), we get a palindrome (63557275536).

The spelling of 13525123005 in words is "thirteen billion, five hundred twenty-five million, one hundred twenty-three thousand, five".