20041251000 has 128 divisors (see below), whose sum is σ = 64054186560. Its totient is φ = 5213952000.

The previous prime is 20041250953. The next prime is 20041251001. The reversal of 20041251000 is 15214002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041251001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41532 + ... + 204468.

Almost surely, 2^20041251000 is an apocalyptic number.

20041251000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20041251000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32027093280).

20041251000 is an abundant number, since it is smaller than the sum of its proper divisors (44012935560).

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

20041251000 is a wasteful number, since it uses less digits than its factorization.

20041251000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163002 (or 162988 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 20041251000 its reverse (15214002), we get a palindrome (20056465002).

The spelling of 20041251000 in words is "twenty billion, forty-one million, two hundred fifty-one thousand".