225897449937849 has 12 divisors (see below), whose sum is σ = 326296957772500. Its totient is φ = 150598004022144.

The previous prime is 225897449937793. The next prime is 225897449937853. The reversal of 225897449937849 is 948739944798522.

225897449937849 is a `hidden beast` number, since 2 + 2 + 5 + 8 + 9 + 7 + 4 + 499 + 3 + 78 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 139784747763600 + 86112702174249 = 11823060^2 + 9279693^2 .

It is not a de Polignac number, because 225897449937849 - 2⁷ = 225897449937721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225897449937949) 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, 19776004 + ... + 29032485.

Almost surely, 2^{225897449937849} is an apocalyptic number.

It is an amenable number.

225897449937849 is a deficient number, since it is larger than the sum of its proper divisors (100399507834651).

225897449937849 is a wasteful number, since it uses less digits than its factorization.

225897449937849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49322744 (or 49322741 counting only the distinct ones).

The product of its digits is 79009136640, while the sum is 90.

The spelling of 225897449937849 in words is "two hundred twenty-five trillion, eight hundred ninety-seven billion, four hundred forty-nine million, nine hundred thirty-seven thousand, eight hundred forty-nine".