7317225 has 36 divisors (see below), whose sum is σ = 13884156. Its totient is φ = 3671040.

The previous prime is 7317203. The next prime is 7317253. The reversal of 7317225 is 5227137.

7317225 is a nontrivial binomial coefficient, being equal to C(3826, 2).

It can be written as a sum of positive squares in 6 ways, for example, as 331776 + 6985449 = 576^2 + 2643^2 .

It is not a de Polignac number, because 7317225 - 2⁶ = 7317161 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2869 + ... + 4781.

It is an arithmetic number, because the mean of its divisors is an integer number (385671).

Almost surely, 2^7317225 is an apocalyptic number.

7317225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7317225 is the 3825-th triangular number and also the 1913-rd hexagonal number.

It is an amenable number.

7317225 is a deficient number, since it is larger than the sum of its proper divisors (6566931).

7317225 is a wasteful number, since it uses less digits than its factorization.

7317225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946 (or 1938 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 7317225 is about 2705.0369683241. The cubic root of 7317225 is about 194.1401987250.

The spelling of 7317225 in words is "seven million, three hundred seventeen thousand, two hundred twenty-five".