5256235520 has 80 divisors (see below), whose sum is σ = 12635171208. Its totient is φ = 2097070080.

The previous prime is 5256235511. The next prime is 5256235531. The reversal of 5256235520 is 255326525.

It can be written as a sum of positive squares in 4 ways, for example, as 1840066816 + 3416168704 = 42896^2 + 58448^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075322 + ... + 1080198.

Almost surely, 2^5256235520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5256235520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6317585604).

5256235520 is an abundant number, since it is smaller than the sum of its proper divisors (7378935688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5256235520 is an equidigital number, since it uses as much as digits as its factorization.

5256235520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321 (or 5305 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 5256235520 is about 72499.9001378623. The cubic root of 5256235520 is about 1738.7011401615.

The spelling of 5256235520 in words is "five billion, two hundred fifty-six million, two hundred thirty-five thousand, five hundred twenty".