7228525 has 6 divisors (see below), whose sum is σ = 8963402. Its totient is φ = 5782800.

The previous prime is 7228523. The next prime is 7228547. The reversal of 7228525 is 5258227.

It can be written as a sum of positive squares in 3 ways, for example, as 1929321 + 5299204 = 1389^2 + 2302^2 .

It is not a de Polignac number, because 7228525 - 2¹ = 7228523 is a prime.

It is a Duffinian number.

7228525 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228523) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 144546 + ... + 144595.

Almost surely, 2^7228525 is an apocalyptic number.

It is an amenable number.

7228525 is a deficient number, since it is larger than the sum of its proper divisors (1734877).

7228525 is a wasteful number, since it uses less digits than its factorization.

7228525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289151 (or 289146 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 7228525 is about 2688.5916387581. The cubic root of 7228525 is about 193.3525463136.

The spelling of 7228525 in words is "seven million, two hundred twenty-eight thousand, five hundred twenty-five".