9925171200000 has 2160 divisors, whose sum is σ = 43605990163008. Its totient is φ = 2123366400000.

The previous prime is 9925171199987. The next prime is 9925171200047. The reversal of 9925171200000 is 21715299.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 54835199910 + ... + 54835200090.

Almost surely, 2^{9925171200000} is an apocalyptic number.

9925171200000 is a gapful number since it is divisible by the number (90) 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 9925171200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21802995081504).

9925171200000 is an abundant number, since it is smaller than the sum of its proper divisors (33680818963008).

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

9925171200000 is an equidigital number, since it uses as much as digits as its factorization.

9925171200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

Adding to 9925171200000 its reverse (21715299), we get a palindrome (9925192915299).

The spelling of 9925171200000 in words is "nine trillion, nine hundred twenty-five billion, one hundred seventy-one million, two hundred thousand".