491468049225 has 18 divisors (see below), whose sum is σ = 880273884126. Its totient is φ = 262116292800.

The previous prime is 491468049221. The next prime is 491468049239. The reversal of 491468049225 is 522940864194.

491468049225 is a `hidden beast` number, since 4 + 9 + 146 + 8 + 0 + 492 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 5718989376 + 485749059849 = 75624^2 + 696957^2 .

It is not a de Polignac number, because 491468049225 - 2² = 491468049221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491468049221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1092150996 + ... + 1092151445.

Almost surely, 2^491468049225 is an apocalyptic number.

491468049225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

491468049225 is a deficient number, since it is larger than the sum of its proper divisors (388805834901).

491468049225 is a wasteful number, since it uses less digits than its factorization.

491468049225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184302457 (or 2184302449 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 491468049225 in words is "four hundred ninety-one billion, four hundred sixty-eight million, forty-nine thousand, two hundred twenty-five".