3221625624 has 64 divisors (see below), whose sum is σ = 9221264640. Its totient is φ = 918802560.

The previous prime is 3221625611. The next prime is 3221625629. The reversal of 3221625624 is 4265261223.

It is a happy number.

It is a super-2 number, since 2×3221625624² = 20757743322426778752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221625629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77554 + ... + 111614.

It is an arithmetic number, because the mean of its divisors is an integer number (144082260).

Almost surely, 2^3221625624 is an apocalyptic number.

It is an amenable number.

3221625624 is an abundant number, since it is smaller than the sum of its proper divisors (5999639016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221625624 is a wasteful number, since it uses less digits than its factorization.

3221625624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34640 (or 34636 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 3221625624 is about 56759.3659584037. The cubic root of 3221625624 is about 1476.9247111978.

Adding to 3221625624 its reverse (4265261223), we get a palindrome (7486886847).

The spelling of 3221625624 in words is "three billion, two hundred twenty-one million, six hundred twenty-five thousand, six hundred twenty-four".