3221511625 has 32 divisors (see below), whose sum is σ = 4140309888. Its totient is φ = 2501150400.

The previous prime is 3221511607. The next prime is 3221511673. The reversal of 3221511625 is 5261151223.

It is not a de Polignac number, because 3221511625 - 2⁹ = 3221511113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3221511593 and 3221511602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 874287 + ... + 877963.

It is an arithmetic number, because the mean of its divisors is an integer number (129384684).

Almost surely, 2^3221511625 is an apocalyptic number.

It is an amenable number.

3221511625 is a deficient number, since it is larger than the sum of its proper divisors (918798263).

3221511625 is a wasteful number, since it uses less digits than its factorization.

3221511625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898 (or 3888 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 3221511625 is about 56758.3617187811. The cubic root of 3221511625 is about 1476.9072903937.

Adding to 3221511625 its reverse (5261151223), we get a palindrome (8482662848).

The spelling of 3221511625 in words is "three billion, two hundred twenty-one million, five hundred eleven thousand, six hundred twenty-five".