225289169 has 16 divisors (see below), whose sum is σ = 267096192. Its totient is φ = 186012288.

The previous prime is 225289123. The next prime is 225289223. The reversal of 225289169 is 961982522.

225289169 = 1257² + 1258² + ... + 1385².

It is a de Polignac number, because none of the positive numbers 2^k-225289169 is a prime.

It is a super-2 number, since 2×225289169² = 101510419337421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225289109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16847 + ... + 27099.

It is an arithmetic number, because the mean of its divisors is an integer number (16693512).

Almost surely, 2^225289169 is an apocalyptic number.

It is an amenable number.

225289169 is a deficient number, since it is larger than the sum of its proper divisors (41807023).

225289169 is a wasteful number, since it uses less digits than its factorization.

225289169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376.

The product of its digits is 155520, while the sum is 44.

The square root of 225289169 is about 15009.6358716659. The cubic root of 225289169 is about 608.4806486456.

The spelling of 225289169 in words is "two hundred twenty-five million, two hundred eighty-nine thousand, one hundred sixty-nine".