505522225504 has 48 divisors (see below), whose sum is σ = 1016983005696. Its totient is φ = 247246761600.

The previous prime is 505522225501. The next prime is 505522225511. The reversal of 505522225504 is 405522225505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505522225501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2662039 + ... + 2845609.

It is an arithmetic number, because the mean of its divisors is an integer number (21187145952).

Almost surely, 2^505522225504 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 505522225504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508491502848).

505522225504 is an abundant number, since it is smaller than the sum of its proper divisors (511460780192).

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

505522225504 is a wasteful number, since it uses less digits than its factorization.

505522225504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185459 (or 185451 counting only the distinct ones).

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

Subtracting from 505522225504 its reverse (405522225505), we obtain a palindrome (99999999999).

The spelling of 505522225504 in words is "five hundred five billion, five hundred twenty-two million, two hundred twenty-five thousand, five hundred four".