20007582500 has 30 divisors (see below), whose sum is σ = 43752586878. Its totient is φ = 8003032000.

The previous prime is 20007582499. The next prime is 20007582503. The reversal of 20007582500 is 528570002.

It can be written as a sum of positive squares in 5 ways, for example, as 5755043044 + 14252539456 = 75862^2 + 119384^2 .

It is not an unprimeable number, because it can be changed into a prime (20007582503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3999017 + ... + 4004016.

Almost surely, 2^20007582500 is an apocalyptic number.

20007582500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20007582500 is an abundant number, since it is smaller than the sum of its proper divisors (23745004378).

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

20007582500 is an equidigital number, since it uses as much as digits as its factorization.

20007582500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003057 (or 8003040 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The spelling of 20007582500 in words is "twenty billion, seven million, five hundred eighty-two thousand, five hundred".