20425333672 has 32 divisors (see below), whose sum is σ = 40646727720. Its totient is φ = 9589063680.

The previous prime is 20425333639. The next prime is 20425333693. The reversal of 20425333672 is 27633352402.

It can be written as a sum of positive squares in 4 ways, for example, as 18910100196 + 1515233476 = 137514^2 + 38926^2 .

It is a super-2 number, since 2×20425333672² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 121113 + ... + 235624.

Almost surely, 2^20425333672 is an apocalyptic number.

It is an amenable number.

20425333672 is a deficient number, since it is larger than the sum of its proper divisors (20221394048).

20425333672 is a wasteful number, since it uses less digits than its factorization.

20425333672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357181 (or 357177 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 37.

The spelling of 20425333672 in words is "twenty billion, four hundred twenty-five million, three hundred thirty-three thousand, six hundred seventy-two".