225753509 has 2 divisors, whose sum is σ = 225753510. Its totient is φ = 225753508.

The previous prime is 225753491. The next prime is 225753527. The reversal of 225753509 is 905357522.

It is a balanced prime because it is at equal distance from previous prime (225753491) and next prime (225753527).

It can be written as a sum of positive squares in only one way, i.e., 225660484 + 93025 = 15022^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225753509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225753559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112876754 + 112876755.

It is an arithmetic number, because the mean of its divisors is an integer number (112876755).

Almost surely, 2^225753509 is an apocalyptic number.

It is an amenable number.

225753509 is a deficient number, since it is larger than the sum of its proper divisors (1).

225753509 is an equidigital number, since it uses as much as digits as its factorization.

225753509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 225753509 is about 15025.0959730712. The cubic root of 225753509 is about 608.8984050982.

The spelling of 225753509 in words is "two hundred twenty-five million, seven hundred fifty-three thousand, five hundred nine".