6507771225 has 144 divisors (see below), whose sum is σ = 12096100800. Its totient is φ = 3077775360.

The previous prime is 6507771209. The next prime is 6507771239. The reversal of 6507771225 is 5221777056.

It is not a de Polignac number, because 6507771225 - 2⁴ = 6507771209 is a prime.

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 143 ways as a sum of consecutive naturals, for example, 67090377 + ... + 67090473.

It is an arithmetic number, because the mean of its divisors is an integer number (84000700).

Almost surely, 2^6507771225 is an apocalyptic number.

It is an amenable number.

6507771225 is a deficient number, since it is larger than the sum of its proper divisors (5588329575).

6507771225 is a wasteful number, since it uses less digits than its factorization.

6507771225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 6507771225 is about 80670.7581779172. The cubic root of 6507771225 is about 1866.9990305116. Note that the first 3 decimals are identical.

The spelling of 6507771225 in words is "six billion, five hundred seven million, seven hundred seventy-one thousand, two hundred twenty-five".