6505225 has 6 divisors (see below), whose sum is σ = 8066510. Its totient is φ = 5204160.

The previous prime is 6505211. The next prime is 6505243. The reversal of 6505225 is 5225056.

6505225 = 1803² + 1804².

It can be written as a sum of positive squares in 3 ways, for example, as 1505529 + 4999696 = 1227^2 + 2236^2 .

It is not a de Polignac number, because 6505225 - 2¹³ = 6497033 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: 260209 = 6505225 / (6 + 5 + 0 + 5 + 2 + 2 + 5).

6505225 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6505225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130080 + ... + 130129.

Almost surely, 2^6505225 is an apocalyptic number.

6505225 is the 1804-th centered square number.

It is an amenable number.

6505225 is a deficient number, since it is larger than the sum of its proper divisors (1561285).

6505225 is a wasteful number, since it uses less digits than its factorization.

6505225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260219 (or 260214 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 6505225 is about 2550.5342577586. The cubic root of 6505225 is about 186.6755505267.

The spelling of 6505225 in words is "six million, five hundred five thousand, two hundred twenty-five".