20025105361212 has 192 divisors, whose sum is σ = 57935111270400. Its totient is φ = 5255680826880.

The previous prime is 20025105361211. The next prime is 20025105361249. The reversal of 20025105361212 is 21216350152002.

20025105361212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 20025105361212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20025105361211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9727339 + ... + 11604797.

It is an arithmetic number, because the mean of its divisors is an integer number (301745371200).

Almost surely, 2^{20025105361212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20025105361212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28967555635200).

20025105361212 is an abundant number, since it is smaller than the sum of its proper divisors (37910005909188).

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

20025105361212 is a wasteful number, since it uses less digits than its factorization.

20025105361212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877696 (or 1877694 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20025105361212 in words is "twenty trillion, twenty-five billion, one hundred five million, three hundred sixty-one thousand, two hundred twelve".