21725120326000 has 320 divisors, whose sum is σ = 65226178757376. Its totient is φ = 6814789632000.

The previous prime is 21725120325977. The next prime is 21725120326037. The reversal of 21725120326000 is 62302152712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20037820 + ... + 21094180.

Almost surely, 2^{21725120326000} is an apocalyptic number.

21725120326000 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 21725120326000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32613089378688).

21725120326000 is an abundant number, since it is smaller than the sum of its proper divisors (43501058431376).

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

21725120326000 is a wasteful number, since it uses less digits than its factorization.

21725120326000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056517 (or 1056501 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 21725120326000 its reverse (62302152712), we get a palindrome (21787422478712).

The spelling of 21725120326000 in words is "twenty-one trillion, seven hundred twenty-five billion, one hundred twenty million, three hundred twenty-six thousand".