8325521618404 has 27 divisors (see below), whose sum is σ = 14772728781993. Its totient is φ = 4105528939872.

The previous prime is 8325521618363. The next prime is 8325521618417. The reversal of 8325521618404 is 4048161255238.

The square root of 8325521618404 is 2885398.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4725971644900 + 3599549973504 = 2173930^2 + 1897248^2 .

It is a super-3 number, since 3×8325521618404³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 421258227 + ... + 421277989.

Almost surely, 2^{8325521618404} is an apocalyptic number.

8325521618404 is the 2885398-th square number.

It is an amenable number.

8325521618404 is a deficient number, since it is larger than the sum of its proper divisors (6447207163589).

8325521618404 is an frugal number, since it uses more digits than its factorization.

8325521618404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39676 (or 19838 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

Multiplying 8325521618404 by its sum of digits (49), we get a square (407950559301796 = 20197786²).

The spelling of 8325521618404 in words is "eight trillion, three hundred twenty-five billion, five hundred twenty-one million, six hundred eighteen thousand, four hundred four".