20125321015320 has 192 divisors, whose sum is σ = 67523289949440. Its totient is φ = 5193163238400.

The previous prime is 20125321015297. The next prime is 20125321015357. The reversal of 20125321015320 is 2351012352102.

20125321015320 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 5 + 321 + 0 + 15 + 320 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133632702 + ... + 133783218.

It is an arithmetic number, because the mean of its divisors is an integer number (351683801820).

Almost surely, 2^{20125321015320} is an apocalyptic number.

20125321015320 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 20125321015320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33761644974720).

20125321015320 is an abundant number, since it is smaller than the sum of its proper divisors (47397968934120).

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

20125321015320 is a wasteful number, since it uses less digits than its factorization.

20125321015320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162546 (or 162539 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20125321015320 its reverse (2351012352102), we get a palindrome (22476333367422).

The spelling of 20125321015320 in words is "twenty trillion, one hundred twenty-five billion, three hundred twenty-one million, fifteen thousand, three hundred twenty".