225080909 has 2 divisors, whose sum is σ = 225080910. Its totient is φ = 225080908.

The previous prime is 225080903. The next prime is 225080927. The reversal of 225080909 is 909080522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112826884 + 112254025 = 10622^2 + 10595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225080909 is a prime.

It is a super-2 number, since 2×225080909² = 101322831192532562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225080903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112540454 + 112540455.

It is an arithmetic number, because the mean of its divisors is an integer number (112540455).

Almost surely, 2^225080909 is an apocalyptic number.

It is an amenable number.

225080909 is a deficient number, since it is larger than the sum of its proper divisors (1).

225080909 is an equidigital number, since it uses as much as digits as its factorization.

225080909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 225080909 is about 15002.6967242559. The cubic root of 225080909 is about 608.2930952472.

The spelling of 225080909 in words is "two hundred twenty-five million, eighty thousand, nine hundred nine".