20424235324225 has 48 divisors (see below), whose sum is σ = 25688445584256. Its totient is φ = 16107048000000.

The previous prime is 20424235324187. The next prime is 20424235324277. The reversal of 20424235324225 is 52242353242402.

It is a de Polignac number, because none of the positive numbers 2^k-20424235324225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2438128237 + ... + 2438136613.

It is an arithmetic number, because the mean of its divisors is an integer number (535175949672).

Almost surely, 2^{20424235324225} is an apocalyptic number.

20424235324225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20424235324225 is a deficient number, since it is larger than the sum of its proper divisors (5264210260031).

20424235324225 is a wasteful number, since it uses less digits than its factorization.

20424235324225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586 (or 12581 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 40.

Adding to 20424235324225 its reverse (52242353242402), we get a palindrome (72666588566627).

The spelling of 20424235324225 in words is "twenty trillion, four hundred twenty-four billion, two hundred thirty-five million, three hundred twenty-four thousand, two hundred twenty-five".