20425369536 has 560 divisors, whose sum is σ = 72492900480. Its totient is φ = 5604526080.

The previous prime is 20425369529. The next prime is 20425369553. The reversal of 20425369536 is 63596352402.

20425369536 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 53 + 69 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20425369491 and 20425369500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 43737175 + ... + 43737641.

It is an arithmetic number, because the mean of its divisors is an integer number (129451608).

Almost surely, 2^20425369536 is an apocalyptic number.

20425369536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20425369536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36246450240).

20425369536 is an abundant number, since it is smaller than the sum of its proper divisors (52067530944).

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

20425369536 is a wasteful number, since it uses less digits than its factorization.

20425369536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 20425369536 in words is "twenty billion, four hundred twenty-five million, three hundred sixty-nine thousand, five hundred thirty-six".