816034225 has 6 divisors (see below), whose sum is σ = 1011882470. Its totient is φ = 652827360.

The previous prime is 816034217. The next prime is 816034229. The reversal of 816034225 is 522430618.

It can be written as a sum of positive squares in 3 ways, for example, as 2187441 + 813846784 = 1479^2 + 28528^2 .

It is not a de Polignac number, because 816034225 - 2³ = 816034217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816034229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16320660 + ... + 16320709.

Almost surely, 2^816034225 is an apocalyptic number.

It is an amenable number.

816034225 is a deficient number, since it is larger than the sum of its proper divisors (195848245).

816034225 is a wasteful number, since it uses less digits than its factorization.

816034225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32641379 (or 32641374 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 816034225 is about 28566.3127652135. The cubic root of 816034225 is about 934.4788100677.

It can be divided in two parts, 81 and 6034225, that added together give a palindrome (6034306).

The spelling of 816034225 in words is "eight hundred sixteen million, thirty-four thousand, two hundred twenty-five".