225138653 has 2 divisors, whose sum is σ = 225138654. Its totient is φ = 225138652.

The previous prime is 225138637. The next prime is 225138671. The reversal of 225138653 is 356831522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119727364 + 105411289 = 10942^2 + 10267^2 .

It is a cyclic number.

It is not a de Polignac number, because 225138653 - 2⁴ = 225138637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225138623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112569326 + 112569327.

It is an arithmetic number, because the mean of its divisors is an integer number (112569327).

Almost surely, 2^225138653 is an apocalyptic number.

It is an amenable number.

225138653 is a deficient number, since it is larger than the sum of its proper divisors (1).

225138653 is an equidigital number, since it uses as much as digits as its factorization.

225138653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 225138653 is about 15004.6210548617. The cubic root of 225138653 is about 608.3451095404.

It can be divided in two parts, 2251 and 38653, that added together give a palindrome (40904).

The spelling of 225138653 in words is "two hundred twenty-five million, one hundred thirty-eight thousand, six hundred fifty-three".