20302242253 has 2 divisors, whose sum is σ = 20302242254. Its totient is φ = 20302242252.

The previous prime is 20302242221. The next prime is 20302242269. The reversal of 20302242253 is 35224220302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19469458089 + 832784164 = 139533^2 + 28858^2 .

It is a cyclic number.

It is not a de Polignac number, because 20302242253 - 2⁵ = 20302242221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302245253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151121126 + 10151121127.

It is an arithmetic number, because the mean of its divisors is an integer number (10151121127).

Almost surely, 2^20302242253 is an apocalyptic number.

It is an amenable number.

20302242253 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302242253 is an equidigital number, since it uses as much as digits as its factorization.

20302242253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20302242253 its reverse (35224220302), we get a palindrome (55526462555).

The spelling of 20302242253 in words is "twenty billion, three hundred two million, two hundred forty-two thousand, two hundred fifty-three".