20420425141450 has 24 divisors (see below), whose sum is σ = 38271929636160. Its totient is φ = 8105817610800.

The previous prime is 20420425141397. The next prime is 20420425141451. The reversal of 20420425141450 is 5414152402402.

It is not an unprimeable number, because it can be changed into a prime (20420425141451) 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 11 ways as a sum of consecutive naturals, for example, 1558804530 + ... + 1558817629.

It is an arithmetic number, because the mean of its divisors is an integer number (1594663734840).

Almost surely, 2^{20420425141450} is an apocalyptic number.

20420425141450 is a deficient number, since it is larger than the sum of its proper divisors (17851504494710).

20420425141450 is a wasteful number, since it uses less digits than its factorization.

20420425141450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3117622302 (or 3117622297 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 34.

Adding to 20420425141450 its reverse (5414152402402), we get a palindrome (25834577543852).

The spelling of 20420425141450 in words is "twenty trillion, four hundred twenty billion, four hundred twenty-five million, one hundred forty-one thousand, four hundred fifty".