20425712443 has 16 divisors (see below), whose sum is σ = 22004438400. Its totient is φ = 18902600640.

The previous prime is 20425712441. The next prime is 20425712459. The reversal of 20425712443 is 34421752402.

It is a cyclic number.

It is not a de Polignac number, because 20425712443 - 2¹ = 20425712441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20425712399 and 20425712408.

It is not an unprimeable number, because it can be changed into a prime (20425712441) 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 15 ways as a sum of consecutive naturals, for example, 67588 + ... + 213118.

It is an arithmetic number, because the mean of its divisors is an integer number (1375277400).

Almost surely, 2^20425712443 is an apocalyptic number.

20425712443 is a deficient number, since it is larger than the sum of its proper divisors (1578725957).

20425712443 is a wasteful number, since it uses less digits than its factorization.

20425712443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145722.

The product of its (nonzero) digits is 53760, while the sum is 34.

The spelling of 20425712443 in words is "twenty billion, four hundred twenty-five million, seven hundred twelve thousand, four hundred forty-three".