5525218440 has 384 divisors, whose sum is σ = 21614947200. Its totient is φ = 1251694080.

The previous prime is 5525218403. The next prime is 5525218453. The reversal of 5525218440 is 448125255.

5525218440 is a `hidden beast` number, since 5 + 52 + 521 + 84 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5525218395 and 5525218404.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 6932122 + ... + 6932918.

It is an arithmetic number, because the mean of its divisors is an integer number (56288925).

Almost surely, 2^5525218440 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 5525218440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10807473600).

5525218440 is an abundant number, since it is smaller than the sum of its proper divisors (16089728760).

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

5525218440 is a wasteful number, since it uses less digits than its factorization.

5525218440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 5525218440 is about 74331.8131085204. The cubic root of 5525218440 is about 1767.8679298096.

The spelling of 5525218440 in words is "five billion, five hundred twenty-five million, two hundred eighteen thousand, four hundred forty".