20025117936 has 60 divisors (see below), whose sum is σ = 56055584832. Its totient is φ = 6673483008.

The previous prime is 20025117899. The next prime is 20025117941. The reversal of 20025117936 is 63971152002.

20025117936 is a `hidden beast` number, since 200 + 251 + 179 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20025117936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718860 + ... + 746196.

Almost surely, 2^20025117936 is an apocalyptic number.

It is an amenable number.

20025117936 is an abundant number, since it is smaller than the sum of its proper divisors (36030466896).

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

20025117936 is a wasteful number, since it uses less digits than its factorization.

20025117936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32438 (or 32429 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

Adding to 20025117936 its reverse (63971152002), we get a palindrome (83996269938).

The spelling of 20025117936 in words is "twenty billion, twenty-five million, one hundred seventeen thousand, nine hundred thirty-six".