6403225 has 6 divisors (see below), whose sum is σ = 7940030. Its totient is φ = 5122560.

The previous prime is 6403219. The next prime is 6403273. The reversal of 6403225 is 5223046.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 488601 + 5914624 = 699^2 + 2432^2 .

It is not a de Polignac number, because 6403225 - 2⁵ = 6403193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6403196 and 6403205.

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 5 ways as a sum of consecutive naturals, for example, 128040 + ... + 128089.

Almost surely, 2^6403225 is an apocalyptic number.

It is an amenable number.

6403225 is a deficient number, since it is larger than the sum of its proper divisors (1536805).

6403225 is a wasteful number, since it uses less digits than its factorization.

6403225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256139 (or 256134 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 6403225 is about 2530.4594444488. The cubic root of 6403225 is about 185.6947337827.

The spelling of 6403225 in words is "six million, four hundred three thousand, two hundred twenty-five".