20748750250 has 16 divisors (see below), whose sum is σ = 38841660936. Its totient is φ = 8299500000.

The previous prime is 20748750241. The next prime is 20748750251. The reversal of 20748750250 is 5205784702.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2773180921 + 17975569329 = 52661^2 + 134073^2 .

It is not an unprimeable number, because it can be changed into a prime (20748750251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41497251 + ... + 41497750.

Almost surely, 2^20748750250 is an apocalyptic number.

20748750250 is a deficient number, since it is larger than the sum of its proper divisors (18092910686).

20748750250 is an equidigital number, since it uses as much as digits as its factorization.

20748750250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82995018 (or 82995008 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The spelling of 20748750250 in words is "twenty billion, seven hundred forty-eight million, seven hundred fifty thousand, two hundred fifty".