20424353043125 has 40 divisors (see below), whose sum is σ = 25881303300600. Its totient is φ = 16109791488000.

The previous prime is 20424353043109. The next prime is 20424353043161. The reversal of 20424353043125 is 52134035342402.

It can be written as a sum of positive squares in 20 ways, for example, as 13084880993809 + 7339472049316 = 3617303^2 + 2709146^2 .

It is not a de Polignac number, because 20424353043125 - 2⁴ = 20424353043109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 127533101 + ... + 127693149.

It is an arithmetic number, because the mean of its divisors is an integer number (647032582515).

Almost surely, 2^{20424353043125} is an apocalyptic number.

20424353043125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20424353043125 is a deficient number, since it is larger than the sum of its proper divisors (5456950257475).

20424353043125 is an equidigital number, since it uses as much as digits as its factorization.

20424353043125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162939 (or 162924 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 20424353043125 its reverse (52134035342402), we get a palindrome (72558388385527).

The spelling of 20424353043125 in words is "twenty trillion, four hundred twenty-four billion, three hundred fifty-three million, forty-three thousand, one hundred twenty-five".