816225364 has 12 divisors (see below), whose sum is σ = 1428686644. Its totient is φ = 408029184.

The previous prime is 816225353. The next prime is 816225367. The reversal of 816225364 is 463522618.

It can be written as a sum of positive squares in 2 ways, for example, as 379080900 + 437144464 = 19470^2 + 20908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816225367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564 + ... + 40660.

Almost surely, 2^816225364 is an apocalyptic number.

It is an amenable number.

816225364 is a deficient number, since it is larger than the sum of its proper divisors (612461280).

816225364 is a wasteful number, since it uses less digits than its factorization.

816225364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41754 (or 41752 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 816225364 is about 28569.6581008594. The cubic root of 816225364 is about 934.5517650966.

The spelling of 816225364 in words is "eight hundred sixteen million, two hundred twenty-five thousand, three hundred sixty-four".