20025442232500 has 240 divisors, whose sum is σ = 46241735507968. Its totient is φ = 7575709680000.

The previous prime is 20025442232479. The next prime is 20025442232503. The reversal of 20025442232500 is 523224452002.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025442232503) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 659432317 + ... + 659462683.

Almost surely, 2^{20025442232500} is an apocalyptic number.

20025442232500 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 20025442232500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23120867753984).

20025442232500 is an abundant number, since it is smaller than the sum of its proper divisors (26216293275468).

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

20025442232500 is a wasteful number, since it uses less digits than its factorization.

20025442232500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30616 (or 30599 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 20025442232500 its reverse (523224452002), we get a palindrome (20548666684502).

The spelling of 20025442232500 in words is "twenty trillion, twenty-five billion, four hundred forty-two million, two hundred thirty-two thousand, five hundred".