4421025 has 54 divisors (see below), whose sum is σ = 9234342. Its totient is φ = 2016000.

The previous prime is 4421023. The next prime is 4421029. The reversal of 4421025 is 5201244.

It can be written as a sum of positive squares in 3 ways, for example, as 1382976 + 3038049 = 1176^2 + 1743^2 .

It is not a de Polignac number, because 4421025 - 2¹ = 4421023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4420989 and 4421007.

It is not an unprimeable number, because it can be changed into a prime (4421023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10825 + ... + 11225.

Almost surely, 2^4421025 is an apocalyptic number.

4421025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4421025 is an abundant number, since it is smaller than the sum of its proper divisors (4813317).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4421025 is a wasteful number, since it uses less digits than its factorization.

4421025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4421025 is about 2102.6233614226. The cubic root of 4421025 is about 164.1248429736.

Adding to 4421025 its reverse (5201244), we get a palindrome (9622269).

The spelling of 4421025 in words is "four million, four hundred twenty-one thousand, twenty-five".