7543225 has 12 divisors (see below), whose sum is σ = 9531756. Its totient is φ = 5919680.

The previous prime is 7543213. The next prime is 7543231. The reversal of 7543225 is 5223457.

It can be written as a sum of positive squares in 6 ways, for example, as 430336 + 7112889 = 656^2 + 2667^2 .

It is not a de Polignac number, because 7543225 - 2⁷ = 7543097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7543193 and 7543202.

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 11 ways as a sum of consecutive naturals, for example, 1522 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (794313).

Almost surely, 2^7543225 is an apocalyptic number.

It is an amenable number.

7543225 is a deficient number, since it is larger than the sum of its proper divisors (1988531).

7543225 is a wasteful number, since it uses less digits than its factorization.

7543225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5751 counting only the distinct ones).

The product of its digits is 8400, while the sum is 28.

The square root of 7543225 is about 2746.4932186335. The cubic root of 7543225 is about 196.1187067251.

It can be divided in two parts, 75432 and 25, that added together give a palindrome (75457).

The spelling of 7543225 in words is "seven million, five hundred forty-three thousand, two hundred twenty-five".