20425335635 has 16 divisors (see below), whose sum is σ = 25803943200. Its totient is φ = 15478142976.

The previous prime is 20425335631. The next prime is 20425335641. The reversal of 20425335635 is 53653352402.

It is not a de Polignac number, because 20425335635 - 2² = 20425335631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20425335631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1385081 + ... + 1399749.

It is an arithmetic number, because the mean of its divisors is an integer number (1612746450).

Almost surely, 2^20425335635 is an apocalyptic number.

20425335635 is a deficient number, since it is larger than the sum of its proper divisors (5378607565).

20425335635 is a wasteful number, since it uses less digits than its factorization.

20425335635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29350.

The product of its (nonzero) digits is 324000, while the sum is 38.

The spelling of 20425335635 in words is "twenty billion, four hundred twenty-five million, three hundred thirty-five thousand, six hundred thirty-five".