20000357250 has 128 divisors (see below), whose sum is σ = 52632792576. Its totient is φ = 5048524800.

The previous prime is 20000357213. The next prime is 20000357339. The reversal of 20000357250 is 5275300002.

It is a self number, because there is not a number n which added to its sum of digits gives 20000357250.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1667274 + ... + 1679226.

It is an arithmetic number, because the mean of its divisors is an integer number (411193692).

Almost surely, 2^20000357250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000357250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26316396288).

20000357250 is an abundant number, since it is smaller than the sum of its proper divisors (32632435326).

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

20000357250 is a wasteful number, since it uses less digits than its factorization.

20000357250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12093 (or 12083 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

Adding to 20000357250 its reverse (5275300002), we get a palindrome (25275657252).

The spelling of 20000357250 in words is "twenty billion, three hundred fifty-seven thousand, two hundred fifty".