13531202250 has 32 divisors (see below), whose sum is σ = 33773882688. Its totient is φ = 3608320400.

The previous prime is 13531202231. The next prime is 13531202263. The reversal of 13531202250 is 5220213531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13531202250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9020052 + ... + 9021551.

It is an arithmetic number, because the mean of its divisors is an integer number (1055433834).

Almost surely, 2^13531202250 is an apocalyptic number.

13531202250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13531202250 is an abundant number, since it is smaller than the sum of its proper divisors (20242680438).

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

13531202250 is a wasteful number, since it uses less digits than its factorization.

13531202250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18041623 (or 18041613 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 13531202250 its reverse (5220213531), we get a palindrome (18751415781).

The spelling of 13531202250 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, two hundred fifty".