20025434012144 has 40 divisors (see below), whose sum is σ = 42410633795712. Its totient is φ = 9084373603520.

The previous prime is 20025434012123. The next prime is 20025434012159. The reversal of 20025434012144 is 44121043452002.

It is a super-2 number, since 2×20025434012144² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20025434012144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113013734 + ... + 113190789.

Almost surely, 2^{20025434012144} is an apocalyptic number.

It is an amenable number.

20025434012144 is an abundant number, since it is smaller than the sum of its proper divisors (22385199783568).

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

20025434012144 is a wasteful number, since it uses less digits than its factorization.

20025434012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226205045 (or 226205039 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 20025434012144 its reverse (44121043452002), we get a palindrome (64146477464146).

The spelling of 20025434012144 in words is "twenty trillion, twenty-five billion, four hundred thirty-four million, twelve thousand, one hundred forty-four".