20444925 has 24 divisors (see below), whose sum is σ = 34149600. Its totient is φ = 10792000.

The previous prime is 20444917. The next prime is 20444929. The reversal of 20444925 is 52944402.

It is not a de Polignac number, because 20444925 - 2³ = 20444917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20444892 and 20444901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444929) 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 23 ways as a sum of consecutive naturals, for example, 6226 + ... + 8924.

It is an arithmetic number, because the mean of its divisors is an integer number (1422900).

Almost surely, 2^20444925 is an apocalyptic number.

20444925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20444925 is a deficient number, since it is larger than the sum of its proper divisors (13704675).

20444925 is a wasteful number, since it uses less digits than its factorization.

20444925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813 (or 2808 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 20444925 is about 4521.6064623096. The cubic root of 20444925 is about 273.4398710543.

The spelling of 20444925 in words is "twenty million, four hundred forty-four thousand, nine hundred twenty-five".