7511225 has 12 divisors (see below), whose sum is σ = 9719616. Its totient is φ = 5747280.

The previous prime is 7511219. The next prime is 7511227. The reversal of 7511225 is 5221157.

It is a happy number.

It is not a de Polignac number, because 7511225 - 2⁴ = 7511209 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 7511225.

It is not an unprimeable number, because it can be changed into a prime (7511227) 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 11 ways as a sum of consecutive naturals, for example, 5957 + ... + 7106.

It is an arithmetic number, because the mean of its divisors is an integer number (809968).

Almost surely, 2^7511225 is an apocalyptic number.

It is an amenable number.

7511225 is a deficient number, since it is larger than the sum of its proper divisors (2208391).

7511225 is a wasteful number, since it uses less digits than its factorization.

7511225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13096 (or 13091 counting only the distinct ones).

The product of its digits is 700, while the sum is 23.

The square root of 7511225 is about 2740.6614165197. The cubic root of 7511225 is about 195.8409875787.

The spelling of 7511225 in words is "seven million, five hundred eleven thousand, two hundred twenty-five".