663225 has 24 divisors (see below), whose sum is σ = 1130880. Its totient is φ = 342720.

The previous prime is 663209. The next prime is 663239. The reversal of 663225 is 522366.

It is not a de Polignac number, because 663225 - 2⁴ = 663209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663195 and 663204.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 663225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2656 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (47120).

2⁶⁶³²²⁵ is an apocalyptic number.

It is an amenable number.

663225 is a deficient number, since it is larger than the sum of its proper divisors (467655).

663225 is a wasteful number, since it uses less digits than its factorization.

663225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 284 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 663225 is about 814.3862719865. The cubic root of 663225 is about 87.2074584003.

It can be divided in two parts, 663 and 225, that added together give a palindrome (888).

The spelling of 663225 in words is "six hundred sixty-three thousand, two hundred twenty-five".