6225661065 has 32 divisors (see below), whose sum is σ = 10740360960. Its totient is φ = 3061207296.

The previous prime is 6225661063. The next prime is 6225661121. The reversal of 6225661065 is 5601665226.

It is a happy number.

It is not a de Polignac number, because 6225661065 - 2¹ = 6225661063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (6225661063) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 144579 + ... + 182631.

It is an arithmetic number, because the mean of its divisors is an integer number (335636280).

Almost surely, 2^6225661065 is an apocalyptic number.

6225661065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6225661065 is a deficient number, since it is larger than the sum of its proper divisors (4514699895).

6225661065 is a wasteful number, since it uses less digits than its factorization.

6225661065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38913.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 6225661065 is about 78902.8584082985. The cubic root of 6225661065 is about 1839.6215613680.

It can be divided in two parts, 62256 and 61065, that added together give a palindrome (123321).

The spelling of 6225661065 in words is "six billion, two hundred twenty-five million, six hundred sixty-one thousand, sixty-five".