522205221852 has 18 divisors (see below), whose sum is σ = 1320018755328. Its totient is φ = 174068407272.

The previous prime is 522205221809. The next prime is 522205221887. The reversal of 522205221852 is 258122502225.

522205221852 is a `hidden beast` number, since 52 + 2 + 2 + 0 + 522 + 1 + 85 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 14505700607 = 522205221852 / (5 + 2 + 2 + 2 + 0 + 5 + 2 + 2 + 1 + 8 + 5 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7252850268 + ... + 7252850339.

It is an arithmetic number, because the mean of its divisors is an integer number (73334375296).

Almost surely, 2^522205221852 is an apocalyptic number.

It is an amenable number.

522205221852 is an abundant number, since it is smaller than the sum of its proper divisors (797813533476).

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

522205221852 is a wasteful number, since it uses less digits than its factorization.

522205221852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14505700617 (or 14505700612 counting only the distinct ones).

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

The spelling of 522205221852 in words is "five hundred twenty-two billion, two hundred five million, two hundred twenty-one thousand, eight hundred fifty-two".