6567021225 has 36 divisors (see below), whose sum is σ = 11767322736. Its totient is φ = 3500905440.

The previous prime is 6567021221. The next prime is 6567021259. The reversal of 6567021225 is 5221207656.

It is not a de Polignac number, because 6567021225 - 2² = 6567021221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6567021225.

It is not an unprimeable number, because it can be changed into a prime (6567021221) 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 35 ways as a sum of consecutive naturals, for example, 688942 + ... + 698408.

It is an arithmetic number, because the mean of its divisors is an integer number (326870076).

Almost surely, 2^6567021225 is an apocalyptic number.

It is an amenable number.

6567021225 is a deficient number, since it is larger than the sum of its proper divisors (5200301511).

6567021225 is a wasteful number, since it uses less digits than its factorization.

6567021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12566 (or 12558 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 6567021225 is about 81037.1595319086. The cubic root of 6567021225 is about 1872.6479520981.

The spelling of 6567021225 in words is "six billion, five hundred sixty-seven million, twenty-one thousand, two hundred twenty-five".