20443225403425 has 48 divisors (see below), whose sum is σ = 27793995356160. Its totient is φ = 14792704128000.

The previous prime is 20443225403417. The next prime is 20443225403443. The reversal of 20443225403425 is 52430452234402.

It is not a de Polignac number, because 20443225403425 - 2³ = 20443225403417 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 73359904 + ... + 73638046.

It is an arithmetic number, because the mean of its divisors is an integer number (579041569920).

Almost surely, 2^{20443225403425} is an apocalyptic number.

20443225403425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20443225403425 is a deficient number, since it is larger than the sum of its proper divisors (7350769952735).

20443225403425 is a wasteful number, since it uses less digits than its factorization.

20443225403425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279514 (or 279509 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 40.

Adding to 20443225403425 its reverse (52430452234402), we get a palindrome (72873677637827).

The spelling of 20443225403425 in words is "twenty trillion, four hundred forty-three billion, two hundred twenty-five million, four hundred three thousand, four hundred twenty-five".