6865537225 has 12 divisors (see below), whose sum is σ = 8549811036. Its totient is φ = 5468852480.

The previous prime is 6865537223. The next prime is 6865537229. The reversal of 6865537225 is 5227355686.

It can be written as a sum of positive squares in 6 ways, for example, as 382710969 + 6482826256 = 19563^2 + 80516^2 .

It is not a de Polignac number, because 6865537225 - 2¹ = 6865537223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6865537223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 583492 + ... + 595141.

It is an arithmetic number, because the mean of its divisors is an integer number (712484253).

Almost surely, 2^6865537225 is an apocalyptic number.

It is an amenable number.

6865537225 is a deficient number, since it is larger than the sum of its proper divisors (1684273811).

6865537225 is a wasteful number, since it uses less digits than its factorization.

6865537225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178876 (or 1178871 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 49.

The square root of 6865537225 is about 82858.5374297664. The cubic root of 6865537225 is about 1900.6034302170.

The spelling of 6865537225 in words is "six billion, eight hundred sixty-five million, five hundred thirty-seven thousand, two hundred twenty-five".