7513225 has 12 divisors (see below), whose sum is σ = 9352204. Its totient is φ = 5987520.

The previous prime is 7513223. The next prime is 7513229. The reversal of 7513225 is 5223157.

It can be written as a sum of positive squares in 6 ways, for example, as 144 + 7513081 = 12^2 + 2741^2 .

It is not a de Polignac number, because 7513225 - 2¹ = 7513223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7513225.

It is not an unprimeable number, because it can be changed into a prime (7513223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9547 + ... + 10303.

Almost surely, 2^7513225 is an apocalyptic number.

It is an amenable number.

7513225 is a deficient number, since it is larger than the sum of its proper divisors (1838979).

7513225 is a wasteful number, since it uses less digits than its factorization.

7513225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164 (or 1159 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 7513225 is about 2741.0262676596. The cubic root of 7513225 is about 195.8583681088.

It can be divided in two parts, 75132 and 25, that added together give a palindrome (75157).

The spelling of 7513225 in words is "seven million, five hundred thirteen thousand, two hundred twenty-five".