3221511225 has 12 divisors (see below), whose sum is σ = 5326232016. Its totient is φ = 1718139280.

The previous prime is 3221511221. The next prime is 3221511233. The reversal of 3221511225 is 5221151223.

It is not a de Polignac number, because 3221511225 - 2² = 3221511221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3221511195 and 3221511204.

It is not an unprimeable number, because it can be changed into a prime (3221511221) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21476667 + ... + 21476816.

It is an arithmetic number, because the mean of its divisors is an integer number (443852668).

Almost surely, 2^3221511225 is an apocalyptic number.

It is an amenable number.

3221511225 is a deficient number, since it is larger than the sum of its proper divisors (2104720791).

3221511225 is a wasteful number, since it uses less digits than its factorization.

3221511225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42953496 (or 42953491 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 3221511225 is about 56758.3581950711. The cubic root of 3221511225 is about 1476.9072292668.

Adding to 3221511225 its reverse (5221151223), we get a palindrome (8442662448).

The spelling of 3221511225 in words is "three billion, two hundred twenty-one million, five hundred eleven thousand, two hundred twenty-five".