20020305253 has 16 divisors (see below), whose sum is σ = 21764332800. Its totient is φ = 18306115200.

The previous prime is 20020305241. The next prime is 20020305257. The reversal of 20020305253 is 35250302002.

It is a cyclic number.

It is not a de Polignac number, because 20020305253 - 2²⁵ = 19986750821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020305257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690513 + ... + 718921.

It is an arithmetic number, because the mean of its divisors is an integer number (1360270800).

Almost surely, 2^20020305253 is an apocalyptic number.

It is an amenable number.

20020305253 is a deficient number, since it is larger than the sum of its proper divisors (1744027547).

20020305253 is a wasteful number, since it uses less digits than its factorization.

20020305253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28932.

The product of its (nonzero) digits is 1800, while the sum is 22.

Adding to 20020305253 its reverse (35250302002), we get a palindrome (55270607255).

The spelling of 20020305253 in words is "twenty billion, twenty million, three hundred five thousand, two hundred fifty-three".