20444254431325 has 12 divisors (see below), whose sum is σ = 25350939661588. Its totient is φ = 16355362147200.

The previous prime is 20444254431233. The next prime is 20444254431343. The reversal of 20444254431325 is 52313445244402.

It can be written as a sum of positive squares in 6 ways, for example, as 1611206264889 + 18833048166436 = 1269333^2 + 4339706^2 .

It is not a de Polignac number, because 20444254431325 - 2¹⁹ = 20444253907037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12521185 + ... + 14059465.

Almost surely, 2^{20444254431325} is an apocalyptic number.

20444254431325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20444254431325 is a deficient number, since it is larger than the sum of its proper divisors (4906685230263).

20444254431325 is a wasteful number, since it uses less digits than its factorization.

20444254431325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069904 (or 2069899 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 20444254431325 its reverse (52313445244402), we get a palindrome (72757699675727).

The spelling of 20444254431325 in words is "twenty trillion, four hundred forty-four billion, two hundred fifty-four million, four hundred thirty-one thousand, three hundred twenty-five".