7443225 has 24 divisors (see below), whose sum is σ = 13674720. Its totient is φ = 3969360.

The previous prime is 7443223. The next prime is 7443239. The reversal of 7443225 is 5223447.

It is not a de Polignac number, because 7443225 - 2¹ = 7443223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 7⁸ + 4⁷ + 4⁸ + 3¹³ + 2⁷ + 2¹¹ + 5 .

It is not an unprimeable number, because it can be changed into a prime (7443221) 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 23 ways as a sum of consecutive naturals, for example, 4839 + ... + 6188.

It is an arithmetic number, because the mean of its divisors is an integer number (569780).

Almost surely, 2^7443225 is an apocalyptic number.

7443225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7443225 is a deficient number, since it is larger than the sum of its proper divisors (6231495).

7443225 is a wasteful number, since it uses less digits than its factorization.

7443225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046 (or 11035 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 7443225 is about 2728.2274465301. The cubic root of 7443225 is about 195.2482046501.

It can be divided in two parts, 744 and 3225, that added together give a square (3969 = 63²).

The spelling of 7443225 in words is "seven million, four hundred forty-three thousand, two hundred twenty-five".