20253133230 has 128 divisors (see below), whose sum is σ = 55770218496. Its totient is φ = 4659177600.

The previous prime is 20253133211. The next prime is 20253133247. The reversal of 20253133230 is 3233135202.

It is a self number, because there is not a number n which added to its sum of digits gives 20253133230.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 953425 + ... + 974435.

It is an arithmetic number, because the mean of its divisors is an integer number (435704832).

Almost surely, 2^20253133230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20253133230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27885109248).

20253133230 is an abundant number, since it is smaller than the sum of its proper divisors (35517085266).

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

20253133230 is a wasteful number, since it uses less digits than its factorization.

20253133230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182.

The product of its (nonzero) digits is 3240, while the sum is 24.

Adding to 20253133230 its reverse (3233135202), we get a palindrome (23486268432).

The spelling of 20253133230 in words is "twenty billion, two hundred fifty-three million, one hundred thirty-three thousand, two hundred thirty".