3221206776225 has 24 divisors (see below), whose sum is σ = 5917476153120. Its totient is φ = 1717976946960.

The previous prime is 3221206776211. The next prime is 3221206776233. The reversal of 3221206776225 is 5226776021223.

3221206776225 is a `hidden beast` number, since 3 + 2 + 2 + 12 + 0 + 6 + 7 + 7 + 622 + 5 = 666.

It is not a de Polignac number, because 3221206776225 - 2²⁷ = 3221072558497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2386078419 + ... + 2386079768.

It is an arithmetic number, because the mean of its divisors is an integer number (246561506380).

Almost surely, 2^{3221206776225} is an apocalyptic number.

It is an amenable number.

3221206776225 is a deficient number, since it is larger than the sum of its proper divisors (2696269376895).

3221206776225 is a wasteful number, since it uses less digits than its factorization.

3221206776225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772158206 (or 4772158195 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 3221206776225 in words is "three trillion, two hundred twenty-one billion, two hundred six million, seven hundred seventy-six thousand, two hundred twenty-five".