20001250251 has 48 divisors (see below), whose sum is σ = 30040657920. Its totient is φ = 12810156480.

The previous prime is 20001250229. The next prime is 20001250273. The reversal of 20001250251 is 15205210002.

It is an interprime number because it is at equal distance from previous prime (20001250229) and next prime (20001250273).

It is not a de Polignac number, because 20001250251 - 2⁹ = 20001249739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001250151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39763666 + ... + 39764168.

It is an arithmetic number, because the mean of its divisors is an integer number (625847040).

Almost surely, 2^20001250251 is an apocalyptic number.

20001250251 is a deficient number, since it is larger than the sum of its proper divisors (10039407669).

20001250251 is a wasteful number, since it uses less digits than its factorization.

20001250251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

Adding to 20001250251 its reverse (15205210002), we get a palindrome (35206460253).

The spelling of 20001250251 in words is "twenty billion, one million, two hundred fifty thousand, two hundred fifty-one".