20002000253 has 2 divisors, whose sum is σ = 20002000254. Its totient is φ = 20002000252.

The previous prime is 20002000217. The next prime is 20002000261. The reversal of 20002000253 is 35200020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18713692804 + 1288307449 = 136798^2 + 35893^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002000253 - 2¹⁸ = 20001738109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002000273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001000126 + 10001000127.

It is an arithmetic number, because the mean of its divisors is an integer number (10001000127).

Almost surely, 2^20002000253 is an apocalyptic number.

It is an amenable number.

20002000253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002000253 is an equidigital number, since it uses as much as digits as its factorization.

20002000253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 14.

Adding to 20002000253 its reverse (35200020002), we get a palindrome (55202020255).

The spelling of 20002000253 in words is "twenty billion, two million, two hundred fifty-three", and thus it is an aban number.