20000017250 has 16 divisors (see below), whose sum is σ = 37440032760. Its totient is φ = 8000006800.

The previous prime is 20000017249. The next prime is 20000017267. The reversal of 20000017250 is 5271000002.

It can be written as a sum of positive squares in 4 ways, for example, as 12809486041 + 7190531209 = 113179^2 + 84797^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39999785 + ... + 40000284.

Almost surely, 2^20000017250 is an apocalyptic number.

20000017250 is a deficient number, since it is larger than the sum of its proper divisors (17440015510).

20000017250 is an equidigital number, since it uses as much as digits as its factorization.

20000017250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80000086 (or 80000076 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

Adding to 20000017250 its reverse (5271000002), we get a palindrome (25271017252).

The spelling of 20000017250 in words is "twenty billion, seventeen thousand, two hundred fifty".