7520225 has 6 divisors (see below), whose sum is σ = 9325110. Its totient is φ = 6016160.

The previous prime is 7520221. The next prime is 7520267. The reversal of 7520225 is 5220257.

It can be written as a sum of positive squares in 3 ways, for example, as 2193361 + 5326864 = 1481^2 + 2308^2 .

It is not a de Polignac number, because 7520225 - 2² = 7520221 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7520225.

It is not an unprimeable number, because it can be changed into a prime (7520221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 150380 + ... + 150429.

It is an arithmetic number, because the mean of its divisors is an integer number (1554185).

Almost surely, 2^7520225 is an apocalyptic number.

It is an amenable number.

7520225 is a deficient number, since it is larger than the sum of its proper divisors (1804885).

7520225 is a wasteful number, since it uses less digits than its factorization.

7520225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300819 (or 300814 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 7520225 is about 2742.3028643824. The cubic root of 7520225 is about 195.9191756853.

Subtracting from 7520225 its reverse (5220257), we obtain a cube (2299968 = 132³).

The spelling of 7520225 in words is "seven million, five hundred twenty thousand, two hundred twenty-five".