6448893025 has 9 divisors (see below), whose sum is σ = 7997125273. Its totient is φ = 5158793200.

The previous prime is 6448892981. The next prime is 6448893029. The reversal of 6448893025 is 5203988446.

The square root of 6448893025 is 80305.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3491273569 + 2957619456 = 59087^2 + 54384^2 .

It is not a de Polignac number, because 6448893025 - 2²⁹ = 5912022113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6448893025.

It is not an unprimeable number, because it can be changed into a prime (6448893029) 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 8 ways as a sum of consecutive naturals, for example, 393495 + ... + 409555.

Almost surely, 2^6448893025 is an apocalyptic number.

6448893025 is the 80305-th square number.

6448893025 is the 40153-rd centered octagonal number.

It is an amenable number.

6448893025 is a deficient number, since it is larger than the sum of its proper divisors (1548232248).

6448893025 is an frugal number, since it uses more digits than its factorization.

6448893025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32132 (or 16066 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The cubic root of 6448893025 is about 1861.3514886635.

Multiplying 6448893025 by its sum of digits (49), we get a square (315995758225 = 562135²).

The spelling of 6448893025 in words is "six billion, four hundred forty-eight million, eight hundred ninety-three thousand, twenty-five".