225497709 has 8 divisors (see below), whose sum is σ = 334070720. Its totient is φ = 150331788.

The previous prime is 225497693. The next prime is 225497729. The reversal of 225497709 is 907794522.

It is not a de Polignac number, because 225497709 - 2⁴ = 225497693 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 (225497729) 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, 4175857 + ... + 4175910.

It is an arithmetic number, because the mean of its divisors is an integer number (41758840).

Almost surely, 2^225497709 is an apocalyptic number.

It is an amenable number.

225497709 is a deficient number, since it is larger than the sum of its proper divisors (108573011).

225497709 is an equidigital number, since it uses as much as digits as its factorization.

225497709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351776 (or 8351770 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 225497709 is about 15016.5811355315. The cubic root of 225497709 is about 608.6683384226.

The spelling of 225497709 in words is "two hundred twenty-five million, four hundred ninety-seven thousand, seven hundred nine".