6531508225 has 12 divisors (see below), whose sum is σ = 8835349680. Its totient is φ = 4750187600.

The previous prime is 6531508219. The next prime is 6531508271. The reversal of 6531508225 is 5228051356.

It is a happy number.

It is not a de Polignac number, because 6531508225 - 2²¹ = 6529411073 is a prime.

It is a super-3 number, since 3×6531508225³ (a number of 30 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 11875195 + ... + 11875744.

It is an arithmetic number, because the mean of its divisors is an integer number (736279140).

Almost surely, 2^6531508225 is an apocalyptic number.

It is an amenable number.

6531508225 is a deficient number, since it is larger than the sum of its proper divisors (2303841455).

6531508225 is a wasteful number, since it uses less digits than its factorization.

6531508225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23750960 (or 23750955 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 6531508225 is about 80817.7469681010. The cubic root of 6531508225 is about 1869.2662267381.

The spelling of 6531508225 in words is "six billion, five hundred thirty-one million, five hundred eight thousand, two hundred twenty-five".