20425925819 has 8 divisors (see below), whose sum is σ = 22298482752. Its totient is φ = 18596416320.

The previous prime is 20425925809. The next prime is 20425925827. The reversal of 20425925819 is 91852952402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20425925819 - 2⁸ = 20425925563 is a prime.

It is a super-3 number, since 3×20425925819³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20425925809) 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 7 ways as a sum of consecutive naturals, for example, 10760867 + ... + 10762764.

It is an arithmetic number, because the mean of its divisors is an integer number (2787310344).

Almost surely, 2^20425925819 is an apocalyptic number.

20425925819 is a deficient number, since it is larger than the sum of its proper divisors (1872556933).

20425925819 is a wasteful number, since it uses less digits than its factorization.

20425925819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21523717.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 20425925819 in words is "twenty billion, four hundred twenty-five million, nine hundred twenty-five thousand, eight hundred nineteen".