225507509 has 8 divisors (see below), whose sum is σ = 234178560. Its totient is φ = 216896176.

The previous prime is 225507497. The next prime is 225507511. The reversal of 225507509 is 905705522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225507509 - 2⁴ = 225507493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225507539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7157 + ... + 22410.

It is an arithmetic number, because the mean of its divisors is an integer number (29272320).

Almost surely, 2^225507509 is an apocalyptic number.

225507509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

225507509 is a deficient number, since it is larger than the sum of its proper divisors (8671051).

225507509 is a wasteful number, since it uses less digits than its factorization.

225507509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29859.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 225507509 is about 15016.9074379514. The cubic root of 225507509 is about 608.6771557529.

The spelling of 225507509 in words is "two hundred twenty-five million, five hundred seven thousand, five hundred nine".