20425435212 has 48 divisors (see below), whose sum is σ = 58657663232. Its totient is φ = 5386927680.

The previous prime is 20425435207. The next prime is 20425435229. The reversal of 20425435212 is 21253452402.

It is a self number, because there is not a number n which added to its sum of digits gives 20425435212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9351214 + ... + 9353397.

Almost surely, 2^20425435212 is an apocalyptic number.

It is an amenable number.

20425435212 is an abundant number, since it is smaller than the sum of its proper divisors (38232228020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20425435212 is a wasteful number, since it uses less digits than its factorization.

20425435212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18704638 (or 18704636 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20425435212 its reverse (21253452402), we get a palindrome (41678887614).

The spelling of 20425435212 in words is "twenty billion, four hundred twenty-five million, four hundred thirty-five thousand, two hundred twelve".