225415169 has 4 divisors (see below), whose sum is σ = 257617344. Its totient is φ = 193212996.

The previous prime is 225415153. The next prime is 225415181. The reversal of 225415169 is 961514522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225415169 - 2⁴ = 225415153 is a prime.

It is a super-2 number, since 2×225415169² = 101623996830597122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225415129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16101077 + ... + 16101090.

It is an arithmetic number, because the mean of its divisors is an integer number (64404336).

Almost surely, 2^225415169 is an apocalyptic number.

It is an amenable number.

225415169 is a deficient number, since it is larger than the sum of its proper divisors (32202175).

225415169 is an equidigital number, since it uses as much as digits as its factorization.

225415169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32202174.

The product of its digits is 21600, while the sum is 35.

The square root of 225415169 is about 15013.8325886497. The cubic root of 225415169 is about 608.5940647697.

The spelling of 225415169 in words is "two hundred twenty-five million, four hundred fifteen thousand, one hundred sixty-nine".