225213535109 has 2 divisors, whose sum is σ = 225213535110. Its totient is φ = 225213535108.

The previous prime is 225213534979. The next prime is 225213535171. The reversal of 225213535109 is 901535312522.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162336468100 + 62877067009 = 402910^2 + 250753^2 .

It is a cyclic number.

It is not a de Polignac number, because 225213535109 - 2¹² = 225213531013 is a prime.

It is a super-2 number, since 2×225213535109² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225213535189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112606767554 + 112606767555.

It is an arithmetic number, because the mean of its divisors is an integer number (112606767555).

Almost surely, 2^225213535109 is an apocalyptic number.

It is an amenable number.

225213535109 is a deficient number, since it is larger than the sum of its proper divisors (1).

225213535109 is an equidigital number, since it uses as much as digits as its factorization.

225213535109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 225213535109 in words is "two hundred twenty-five billion, two hundred thirteen million, five hundred thirty-five thousand, one hundred nine".