20425205534383 has 16 divisors (see below), whose sum is σ = 22063103818560. Its totient is φ = 18796865907456.

The previous prime is 20425205534353. The next prime is 20425205534417. The reversal of 20425205534383 is 38343550252402.

It is not a de Polignac number, because 20425205534383 - 2¹³ = 20425205526191 is a prime.

It is a super-2 number, since 2×20425205534383² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20425205534303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18394641 + ... + 19473397.

It is an arithmetic number, because the mean of its divisors is an integer number (1378943988660).

Almost surely, 2^{20425205534383} is an apocalyptic number.

20425205534383 is a deficient number, since it is larger than the sum of its proper divisors (1637898284177).

20425205534383 is a wasteful number, since it uses less digits than its factorization.

20425205534383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083186.

The product of its (nonzero) digits is 3456000, while the sum is 46.

Adding to 20425205534383 its reverse (38343550252402), we get a palindrome (58768755786785).

The spelling of 20425205534383 in words is "twenty trillion, four hundred twenty-five billion, two hundred five million, five hundred thirty-four thousand, three hundred eighty-three".