5525145990 has 192 divisors, whose sum is σ = 18159313536. Its totient is φ = 1134176256.

The previous prime is 5525145973. The next prime is 5525146001. The reversal of 5525145990 is 995415255.

5525145990 is a `hidden beast` number, since 5 + 5 + 2 + 51 + 4 + 599 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 293914 + ... + 312146.

It is an arithmetic number, because the mean of its divisors is an integer number (94579758).

Almost surely, 2^5525145990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5525145990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9079656768).

5525145990 is an abundant number, since it is smaller than the sum of its proper divisors (12634167546).

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

5525145990 is a wasteful number, since it uses less digits than its factorization.

5525145990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18303 (or 18300 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 45.

The square root of 5525145990 is about 74331.3257651174. The cubic root of 5525145990 is about 1767.8602026586.

The spelling of 5525145990 in words is "five billion, five hundred twenty-five million, one hundred forty-five thousand, nine hundred ninety".