20396250000 has 720 divisors, whose sum is σ = 85243727088. Its totient is φ = 4536000000.

The previous prime is 20396249981. The next prime is 20396250001. The reversal of 20396250000 is 5269302.

20396250000 is a `hidden beast` number, since 2 + 0 + 39 + 625 + 0 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 18954680976 + 1441569024 = 137676^2 + 37968^2 .

It is a tau number, because it is divible by the number of its divisors (720).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20396250001) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 551249982 + ... + 551250018.

Almost surely, 2^20396250000 is an apocalyptic number.

20396250000 is a gapful number since it is divisible by the number (20) 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 20396250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42621863544).

20396250000 is an abundant number, since it is smaller than the sum of its proper divisors (64847477088).

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

20396250000 is an frugal number, since it uses more digits than its factorization.

20396250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 20396250000 in words is "twenty billion, three hundred ninety-six million, two hundred fifty thousand".