441621225 has 18 divisors (see below), whose sum is σ = 790993086. Its totient is φ = 235531200.

The previous prime is 441621221. The next prime is 441621241. The reversal of 441621225 is 522126144.

441621225 is a `hidden beast` number, since 4 + 416 + 21 + 225 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 62773929 + 378847296 = 7923^2 + 19464^2 .

It is not a de Polignac number, because 441621225 - 2² = 441621221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (441621221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 981156 + ... + 981605.

Almost surely, 2^441621225 is an apocalyptic number.

441621225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

441621225 is a deficient number, since it is larger than the sum of its proper divisors (349371861).

441621225 is a wasteful number, since it uses less digits than its factorization.

441621225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962777 (or 1962769 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 441621225 is about 21014.7858661467. The cubic root of 441621225 is about 761.5235049804.

Adding to 441621225 its reverse (522126144), we get a palindrome (963747369).

The spelling of 441621225 in words is "four hundred forty-one million, six hundred twenty-one thousand, two hundred twenty-five".