20444155713425 has 24 divisors (see below), whose sum is σ = 25388020077600. Its totient is φ = 16331286545280.

The previous prime is 20444155713403. The next prime is 20444155713431. The reversal of 20444155713425 is 52431755144402.

It is not a de Polignac number, because 20444155713425 - 2¹⁰ = 20444155712401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20444155713425.

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 23 ways as a sum of consecutive naturals, for example, 170408861 + ... + 170528789.

It is an arithmetic number, because the mean of its divisors is an integer number (1057834169900).

Almost surely, 2^{20444155713425} is an apocalyptic number.

20444155713425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20444155713425 is a deficient number, since it is larger than the sum of its proper divisors (4943864364175).

20444155713425 is a wasteful number, since it uses less digits than its factorization.

20444155713425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129905 (or 129900 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 47.

The spelling of 20444155713425 in words is "twenty trillion, four hundred forty-four billion, one hundred fifty-five million, seven hundred thirteen thousand, four hundred twenty-five".