6464425 has 18 divisors (see below), whose sum is σ = 8814974. Its totient is φ = 4699200.

The previous prime is 6464413. The next prime is 6464431. The reversal of 6464425 is 5244646.

It can be written as a sum of positive squares in 3 ways, for example, as 7744 + 6456681 = 88^2 + 2541^2 .

It is not a de Polignac number, because 6464425 - 2¹¹ = 6462377 is a prime.

It is a Duffinian number.

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 17 ways as a sum of consecutive naturals, for example, 1957 + ... + 4093.

Almost surely, 2^6464425 is an apocalyptic number.

It is an amenable number.

6464425 is a deficient number, since it is larger than the sum of its proper divisors (2350549).

6464425 is a wasteful number, since it uses less digits than its factorization.

6464425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2153 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 6464425 is about 2542.5233528918. The cubic root of 6464425 is about 186.2844627908.

It can be divided in two parts, 6464 and 425, that added together give a square (6889 = 83²).

The spelling of 6464425 in words is "six million, four hundred sixty-four thousand, four hundred twenty-five".