431816225 has 12 divisors (see below), whose sum is σ = 538416060. Its totient is φ = 343540800.

The previous prime is 431816219. The next prime is 431816227. The reversal of 431816225 is 522618134.

It can be written as a sum of positive squares in 6 ways, for example, as 38031889 + 393784336 = 6167^2 + 19844^2 .

It is a de Polignac number, because none of the positive numbers 2^k-431816225 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431816191 and 431816200.

It is not an unprimeable number, because it can be changed into a prime (431816227) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 43190 + ... + 52239.

It is an arithmetic number, because the mean of its divisors is an integer number (44868005).

Almost surely, 2^431816225 is an apocalyptic number.

It is an amenable number.

431816225 is a deficient number, since it is larger than the sum of its proper divisors (106599835).

431816225 is a wasteful number, since it uses less digits than its factorization.

431816225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95620 (or 95615 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 431816225 is about 20780.1882811489. The cubic root of 431816225 is about 755.8454193667.

The spelling of 431816225 in words is "four hundred thirty-one million, eight hundred sixteen thousand, two hundred twenty-five".