6555331225 has 9 divisors (see below), whose sum is σ = 8129112733. Its totient is φ = 5243941120.

The previous prime is 6555331219. The next prime is 6555331241. The reversal of 6555331225 is 5221335556.

The square root of 6555331225 is 80965.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1605364489 + 4949966736 = 40067^2 + 70356^2 .

It is not a de Polignac number, because 6555331225 - 2²¹ = 6553234073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 396729 + ... + 412921.

Almost surely, 2^6555331225 is an apocalyptic number.

6555331225 is the 80965-th square number.

6555331225 is the 40483-rd centered octagonal number.

It is an amenable number.

6555331225 is a deficient number, since it is larger than the sum of its proper divisors (1573781508).

6555331225 is an frugal number, since it uses more digits than its factorization.

6555331225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32396 (or 16198 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The cubic root of 6555331225 is about 1871.5361209110.

It can be divided in two parts, 6555331 and 225, that added together give a palindrome (6555556).

The spelling of 6555331225 in words is "six billion, five hundred fifty-five million, three hundred thirty-one thousand, two hundred twenty-five".