20540225323 has 4 divisors (see below), whose sum is σ = 20542744840. Its totient is φ = 20537705808.

The previous prime is 20540225311. The next prime is 20540225339. The reversal of 20540225323 is 32352204502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20540225323 - 2²⁹ = 20003354411 is a prime.

It is a super-2 number, since 2×20540225323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20540225291 and 20540225300.

It is not an unprimeable number, because it can be changed into a prime (20540225353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1247490 + ... + 1263847.

It is an arithmetic number, because the mean of its divisors is an integer number (5135686210).

Almost surely, 2^20540225323 is an apocalyptic number.

20540225323 is a deficient number, since it is larger than the sum of its proper divisors (2519517).

20540225323 is an equidigital number, since it uses as much as digits as its factorization.

20540225323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519516.

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20540225323 its reverse (32352204502), we get a palindrome (52892429825).

The spelling of 20540225323 in words is "twenty billion, five hundred forty million, two hundred twenty-five thousand, three hundred twenty-three".