6448025 has 6 divisors (see below), whose sum is σ = 7995582. Its totient is φ = 5158400.

The previous prime is 6448019. The next prime is 6448061. The reversal of 6448025 is 5208446.

It can be written as a sum of positive squares in 3 ways, for example, as 1308736 + 5139289 = 1144^2 + 2267^2 .

It is not a de Polignac number, because 6448025 - 2⁴ = 6448009 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

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, 128936 + ... + 128985.

It is an arithmetic number, because the mean of its divisors is an integer number (1332597).

Almost surely, 2^6448025 is an apocalyptic number.

It is an amenable number.

6448025 is a deficient number, since it is larger than the sum of its proper divisors (1547557).

6448025 is a wasteful number, since it uses less digits than its factorization.

6448025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257931 (or 257926 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 6448025 is about 2539.2961623253. The cubic root of 6448025 is about 186.1267971895.

The spelling of 6448025 in words is "six million, four hundred forty-eight thousand, twenty-five".