20004500253 has 32 divisors (see below), whose sum is σ = 29552345856. Its totient is φ = 11982117888.

The previous prime is 20004500251. The next prime is 20004500261. The reversal of 20004500253 is 35200540002.

20004500253 is a nontrivial binomial coefficient, being equal to C(200023, 2).

It is not a de Polignac number, because 20004500253 - 2¹ = 20004500251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004500251) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1 + ... + 200022.

It is an arithmetic number, because the mean of its divisors is an integer number (923510808).

Almost surely, 2^20004500253 is an apocalyptic number.

20004500253 is the 200022-nd triangular number.

It is an amenable number.

20004500253 is a deficient number, since it is larger than the sum of its proper divisors (9547845603).

20004500253 is a wasteful number, since it uses less digits than its factorization.

20004500253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200133.

The product of its (nonzero) digits is 1200, while the sum is 21.

The spelling of 20004500253 in words is "twenty billion, four million, five hundred thousand, two hundred fifty-three".