20255583750 has 160 divisors (see below), whose sum is σ = 52200465504. Its totient is φ = 5235840000.

The previous prime is 20255583731. The next prime is 20255583763. The reversal of 20255583750 is 5738555202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16698144 + ... + 16699356.

Almost surely, 2^20255583750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20255583750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26100232752).

20255583750 is an abundant number, since it is smaller than the sum of its proper divisors (31944881754).

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

20255583750 is a wasteful number, since it uses less digits than its factorization.

20255583750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372 (or 1357 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 20255583750 in words is "twenty billion, two hundred fifty-five million, five hundred eighty-three thousand, seven hundred fifty".