13525212020 has 48 divisors (see below), whose sum is σ = 29189211408. Its totient is φ = 5261168640.

The previous prime is 13525211993. The next prime is 13525212037. The reversal of 13525212020 is 2021252531.

13525212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1886686096 + 11638525924 = 43436^2 + 107882^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230312 + ... + 283008.

It is an arithmetic number, because the mean of its divisors is an integer number (608108571).

Almost surely, 2^13525212020 is an apocalyptic number.

13525212020 is a gapful number since it is divisible by the number (10) 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 13525212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14594605704).

13525212020 is an abundant number, since it is smaller than the sum of its proper divisors (15663999388).

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

13525212020 is a wasteful number, since it uses less digits than its factorization.

13525212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53060 (or 53058 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 13525212020 its reverse (2021252531), we get a palindrome (15546464551).

The spelling of 13525212020 in words is "thirteen billion, five hundred twenty-five million, two hundred twelve thousand, twenty".