6613225 has 6 divisors (see below), whose sum is σ = 8200430. Its totient is φ = 5290560.

The previous prime is 6613223. The next prime is 6613231. The reversal of 6613225 is 5223166.

It can be written as a sum of positive squares in 3 ways, for example, as 80089 + 6533136 = 283^2 + 2556^2 .

It is not a de Polignac number, because 6613225 - 2¹ = 6613223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 264529 = 6613225 / (6 + 6 + 1 + 3 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6613225.

It is not an unprimeable number, because it can be changed into a prime (6613223) 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, 132240 + ... + 132289.

Almost surely, 2^6613225 is an apocalyptic number.

It is an amenable number.

6613225 is a deficient number, since it is larger than the sum of its proper divisors (1587205).

6613225 is a wasteful number, since it uses less digits than its factorization.

6613225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264539 (or 264534 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 6613225 is about 2571.6191397639. The cubic root of 6613225 is about 187.7029506167.

The spelling of 6613225 in words is "six million, six hundred thirteen thousand, two hundred twenty-five".