5255255440 has 20 divisors (see below), whose sum is σ = 12218469084. Its totient is φ = 2102102144.

The previous prime is 5255255437. The next prime is 5255255461. The reversal of 5255255440 is 445525525.

It can be written as a sum of positive squares in 2 ways, for example, as 2377147536 + 2878107904 = 48756^2 + 53648^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 5255255440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32845267 + ... + 32845426.

Almost surely, 2^5255255440 is an apocalyptic number.

It is an amenable number.

5255255440 is an abundant number, since it is smaller than the sum of its proper divisors (6963213644).

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

5255255440 is a wasteful number, since it uses less digits than its factorization.

5255255440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65690706 (or 65690700 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 37.

The square root of 5255255440 is about 72493.1406410289. The cubic root of 5255255440 is about 1738.5930671162.

It can be divided in two parts, 525525 and 5440, that added together give a triangular number (530965 = T₁₀₃₀).

The spelling of 5255255440 in words is "five billion, two hundred fifty-five million, two hundred fifty-five thousand, four hundred forty".