225497 has 4 divisors (see below), whose sum is σ = 228660. Its totient is φ = 222336.

The previous prime is 225493. The next prime is 225499. The reversal of 225497 is 794522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 52441 = 416^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 225497 - 2² = 225493 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (225493) 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, 1472 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (57165).

225497 is a Friedman number, since it can be written as 29*(4+2)^5-7, using all its digits and the basic arithmetic operations.

2²²⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

225497 is a deficient number, since it is larger than the sum of its proper divisors (3163).

225497 is an equidigital number, since it uses as much as digits as its factorization.

225497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162.

The product of its digits is 5040, while the sum is 29.

The square root of 225497 is about 474.8652440430. The cubic root of 225497 is about 60.8667700506.

The spelling of 225497 in words is "two hundred twenty-five thousand, four hundred ninety-seven".