494218225 has 12 divisors (see below), whose sum is σ = 613176156. Its totient is φ = 395151680.

The previous prime is 494218211. The next prime is 494218229. The reversal of 494218225 is 522812494.

It can be written as a sum of positive squares in 6 ways, for example, as 3196944 + 491021281 = 1788^2 + 22159^2 .

It is not a de Polignac number, because 494218225 - 2⁷ = 494218097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494218229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50859 + ... + 59791.

It is an arithmetic number, because the mean of its divisors is an integer number (51098013).

Almost surely, 2^494218225 is an apocalyptic number.

It is an amenable number.

494218225 is a deficient number, since it is larger than the sum of its proper divisors (118957931).

494218225 is a wasteful number, since it uses less digits than its factorization.

494218225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11156 (or 11151 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 494218225 is about 22231.0194323157. The cubic root of 494218225 is about 790.6293254879.

The spelling of 494218225 in words is "four hundred ninety-four million, two hundred eighteen thousand, two hundred twenty-five".