20525224522400 has 144 divisors (see below), whose sum is σ = 53974945382400. Its totient is φ = 7576670837760.

The previous prime is 20525224522351. The next prime is 20525224522427. The reversal of 20525224522400 is 422542252502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42179681 + ... + 42663519.

It is an arithmetic number, because the mean of its divisors is an integer number (374826009600).

Almost surely, 2^{20525224522400} is an apocalyptic number.

20525224522400 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 20525224522400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26987472691200).

20525224522400 is an abundant number, since it is smaller than the sum of its proper divisors (33449720860000).

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

20525224522400 is a wasteful number, since it uses less digits than its factorization.

20525224522400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487951 (or 487938 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 35.

Adding to 20525224522400 its reverse (422542252502), we get a palindrome (20947766774902).

The spelling of 20525224522400 in words is "twenty trillion, five hundred twenty-five billion, two hundred twenty-four million, five hundred twenty-two thousand, four hundred".