20235025163 has 4 divisors (see below), whose sum is σ = 20235629568. Its totient is φ = 20234420760.

The previous prime is 20235025141. The next prime is 20235025199. The reversal of 20235025163 is 36152053202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36152053202 = 2 ⋅18076026601.

It is a cyclic number.

It is not a de Polignac number, because 20235025163 - 2⁸ = 20235024907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20235025133) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 248843 + ... + 319988.

It is an arithmetic number, because the mean of its divisors is an integer number (5058907392).

Almost surely, 2^20235025163 is an apocalyptic number.

20235025163 is a deficient number, since it is larger than the sum of its proper divisors (604405).

20235025163 is an equidigital number, since it uses as much as digits as its factorization.

20235025163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604404.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 20235025163 its reverse (36152053202), we get a palindrome (56387078365).

The spelling of 20235025163 in words is "twenty billion, two hundred thirty-five million, twenty-five thousand, one hundred sixty-three".