3221252065 has 4 divisors (see below), whose sum is σ = 3865502484. Its totient is φ = 2577001648.

The previous prime is 3221252059. The next prime is 3221252081. The reversal of 3221252065 is 5602521223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2570185809 + 651066256 = 50697^2 + 25516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3221252065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322125202 + ... + 322125211.

It is an arithmetic number, because the mean of its divisors is an integer number (966375621).

Almost surely, 2^3221252065 is an apocalyptic number.

It is an amenable number.

3221252065 is a deficient number, since it is larger than the sum of its proper divisors (644250419).

3221252065 is an equidigital number, since it uses as much as digits as its factorization.

3221252065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644250418.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 3221252065 is about 56756.0751373807. The cubic root of 3221252065 is about 1476.8676240924.

Adding to 3221252065 its reverse (5602521223), we get a palindrome (8823773288).

The spelling of 3221252065 in words is "three billion, two hundred twenty-one million, two hundred fifty-two thousand, sixty-five".