8405256448 has 18 divisors (see below), whose sum is σ = 16777680374. Its totient is φ = 4202628096.

The previous prime is 8405256437. The next prime is 8405256449. The reversal of 8405256448 is 8446525048.

It can be written as a sum of positive squares in only one way, i.e., 6379536384 + 2025720064 = 79872^2 + 45008^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8405256398 and 8405256407.

It is not an unprimeable number, because it can be changed into a prime (8405256449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16416261 + ... + 16416772.

Almost surely, 2^8405256448 is an apocalyptic number.

It is an amenable number.

8405256448 is a deficient number, since it is larger than the sum of its proper divisors (8372423926).

8405256448 is an equidigital number, since it uses as much as digits as its factorization.

8405256448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32833049 (or 32833035 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 46.

The square root of 8405256448 is about 91680.1856891662. The cubic root of 8405256448 is about 2033.2166438335.

The spelling of 8405256448 in words is "eight billion, four hundred five million, two hundred fifty-six thousand, four hundred forty-eight".