20434434201225 has 72 divisors (see below), whose sum is σ = 39928579815072. Its totient is φ = 9907372742400.

The previous prime is 20434434201217. The next prime is 20434434201227. The reversal of 20434434201225 is 52210243443402.

20434434201225 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 4 + 4 + 3 + 420 + 1 + 225 = 666.

It is not a de Polignac number, because 20434434201225 - 2³ = 20434434201217 is a prime.

It is a super-2 number, since 2×20434434201225² (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 20434434201225.

It is not an unprimeable number, because it can be changed into a prime (20434434201227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 158105229 + ... + 158234421.

Almost surely, 2^{20434434201225} is an apocalyptic number.

20434434201225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20434434201225 is a deficient number, since it is larger than the sum of its proper divisors (19494145613847).

20434434201225 is a wasteful number, since it uses less digits than its factorization.

20434434201225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193127 (or 193119 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 20434434201225 its reverse (52210243443402), we get a palindrome (72644677644627).

The spelling of 20434434201225 in words is "twenty trillion, four hundred thirty-four billion, four hundred thirty-four million, two hundred one thousand, two hundred twenty-five".