225665364136 has 16 divisors (see below), whose sum is σ = 427311891540. Its totient is φ = 111715526400.

The previous prime is 225665364131. The next prime is 225665364157. The reversal of 225665364136 is 631463566522.

It can be written as a sum of positive squares in 2 ways, for example, as 195015859236 + 30649504900 = 441606^2 + 175070^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225665364136.

It is not an unprimeable number, because it can be changed into a prime (225665364131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139643601 + ... + 139645216.

Almost surely, 2^225665364136 is an apocalyptic number.

It is an amenable number.

225665364136 is a deficient number, since it is larger than the sum of its proper divisors (201646527404).

225665364136 is a wasteful number, since it uses less digits than its factorization.

225665364136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279288924 (or 279288920 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 49.

The spelling of 225665364136 in words is "two hundred twenty-five billion, six hundred sixty-five million, three hundred sixty-four thousand, one hundred thirty-six".