20025554052105 has 64 divisors (see below), whose sum is σ = 42455833067520. Its totient is φ = 8756515551168.

The previous prime is 20025554052001. The next prime is 20025554052131. The reversal of 20025554052105 is 50125045552002.

20025554052105 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 5 + 5 + 540 + 5 + 2 + 105 = 666.

It is not a de Polignac number, because 20025554052105 - 2⁸ = 20025554051849 is a prime.

It is a super-3 number, since 3×20025554052105³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20025554052105.

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, 460653537 + ... + 460697006.

It is an arithmetic number, because the mean of its divisors is an integer number (663372391680).

Almost surely, 2^{20025554052105} is an apocalyptic number.

It is an amenable number.

20025554052105 is an abundant number, since it is smaller than the sum of its proper divisors (22430279015415).

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

20025554052105 is a wasteful number, since it uses less digits than its factorization.

20025554052105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921350587 (or 921350581 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 20025554052105 in words is "twenty trillion, twenty-five billion, five hundred fifty-four million, fifty-two thousand, one hundred five".