3281566225 has 48 divisors (see below), whose sum is σ = 4827119616. Its totient is φ = 2165544000.

The previous prime is 3281566213. The next prime is 3281566271. The reversal of 3281566225 is 5226651823.

It is a happy number.

It is not a de Polignac number, because 3281566225 - 2⁷ = 3281566097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1034592 + ... + 1037758.

It is an arithmetic number, because the mean of its divisors is an integer number (100564992).

Almost surely, 2^3281566225 is an apocalyptic number.

3281566225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3281566225 is a deficient number, since it is larger than the sum of its proper divisors (1545553391).

3281566225 is a wasteful number, since it uses less digits than its factorization.

3281566225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3401 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 3281566225 is about 57284.9563585415. The cubic root of 3281566225 is about 1486.0282229550.

The spelling of 3281566225 in words is "three billion, two hundred eighty-one million, five hundred sixty-six thousand, two hundred twenty-five".