6431225 has 6 divisors (see below), whose sum is σ = 7974750. Its totient is φ = 5144960.

The previous prime is 6431221. The next prime is 6431233. The reversal of 6431225 is 5221346.

It can be written as a sum of positive squares in 3 ways, for example, as 241081 + 6190144 = 491^2 + 2488^2 .

It is not a de Polignac number, because 6431225 - 2² = 6431221 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 4¹¹ + 3⁵ + 1 + 2¹⁵ + 2¹⁹ + 5 .

It is a self number, because there is not a number n which added to its sum of digits gives 6431225.

It is not an unprimeable number, because it can be changed into a prime (6431221) by changing a digit.

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, 128600 + ... + 128649.

It is an arithmetic number, because the mean of its divisors is an integer number (1329125).

Almost surely, 2^6431225 is an apocalyptic number.

It is an amenable number.

6431225 is a deficient number, since it is larger than the sum of its proper divisors (1543525).

6431225 is a wasteful number, since it uses less digits than its factorization.

6431225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257259 (or 257254 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 6431225 is about 2535.9860015387. The cubic root of 6431225 is about 185.9650086410.

The spelling of 6431225 in words is "six million, four hundred thirty-one thousand, two hundred twenty-five".