20001325050 has 144 divisors (see below), whose sum is σ = 61670761152. Its totient is φ = 4552588800.

The previous prime is 20001325039. The next prime is 20001325079. The reversal of 20001325050 is 5052310002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 745977 + ... + 772323.

Almost surely, 2^20001325050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001325050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30835380576).

20001325050 is an abundant number, since it is smaller than the sum of its proper divisors (41669436102).

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

20001325050 is a wasteful number, since it uses less digits than its factorization.

20001325050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26613 (or 26605 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

Adding to 20001325050 its reverse (5052310002), we get a palindrome (25053635052).

The spelling of 20001325050 in words is "twenty billion, one million, three hundred twenty-five thousand, fifty".