20441225 has 24 divisors (see below), whose sum is σ = 30676608. Its totient is φ = 13190400.

The previous prime is 20441203. The next prime is 20441233. The reversal of 20441225 is 52214402.

It is a happy number.

It is not a de Polignac number, because 20441225 - 2¹⁰ = 20440201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20441197 and 20441206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 461 + ... + 6410.

It is an arithmetic number, because the mean of its divisors is an integer number (1278192).

Almost surely, 2^20441225 is an apocalyptic number.

20441225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20441225 is a deficient number, since it is larger than the sum of its proper divisors (10235383).

20441225 is a wasteful number, since it uses less digits than its factorization.

20441225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6905 (or 6900 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20441225 is about 4521.1972971769. The cubic root of 20441225 is about 273.4233748894.

Adding to 20441225 its reverse (52214402), we get a palindrome (72655627).

The spelling of 20441225 in words is "twenty million, four hundred forty-one thousand, two hundred twenty-five".