3247290225 has 81 divisors (see below), whose sum is σ = 6070067809. Its totient is φ = 1659403200.

The previous prime is 3247290197. The next prime is 3247290253. The reversal of 3247290225 is 5220927423.

The square root of 3247290225 is 56985.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (3247290197) and next prime (3247290253).

It can be written as a sum of positive squares in 4 ways, for example, as 44635761 + 3202654464 = 6681^2 + 56592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3247290225 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3247290225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 24788410 + ... + 24788540.

Almost surely, 2^3247290225 is an apocalyptic number.

3247290225 is the 56985-th square number.

3247290225 is the 28493-rd centered octagonal number.

It is an amenable number.

3247290225 is a deficient number, since it is larger than the sum of its proper divisors (2822777584).

3247290225 is a wasteful number, since it uses less digits than its factorization.

3247290225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The cubic root of 3247290225 is about 1480.8362429257.

Multiplying 3247290225 by its sum of digits (36), we get a square (116902448100 = 341910²).

The spelling of 3247290225 in words is "three billion, two hundred forty-seven million, two hundred ninety thousand, two hundred twenty-five".