13259565252 has 72 divisors (see below), whose sum is σ = 34699031640. Its totient is φ = 4264243200.

The previous prime is 13259565247. The next prime is 13259565287. The reversal of 13259565252 is 25256595231.

It is a happy number.

13259565252 is a `hidden beast` number, since 1 + 3 + 2 + 595 + 6 + 5 + 2 + 52 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5003298756 + 8256266496 = 70734^2 + 90864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13259565198 and 13259565207.

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, 1667478 + ... + 1675410.

It is an arithmetic number, because the mean of its divisors is an integer number (481930995).

Almost surely, 2^13259565252 is an apocalyptic number.

13259565252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13259565252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17349515820).

13259565252 is an abundant number, since it is smaller than the sum of its proper divisors (21439466388).

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

13259565252 is a wasteful number, since it uses less digits than its factorization.

13259565252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9573 (or 9568 counting only the distinct ones).

The product of its digits is 810000, while the sum is 45.

The spelling of 13259565252 in words is "thirteen billion, two hundred fifty-nine million, five hundred sixty-five thousand, two hundred fifty-two".