225587297 has 8 divisors (see below), whose sum is σ = 257231016. Its totient is φ = 195985152.

The previous prime is 225587291. The next prime is 225587311. The reversal of 225587297 is 792785522.

It can be written as a sum of positive squares in 4 ways, for example, as 42823936 + 182763361 = 6544^2 + 13519^2 .

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 225587297 - 2⁶ = 225587233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225587291) 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, 510158 + ... + 510599.

It is an arithmetic number, because the mean of its divisors is an integer number (32153877).

Almost surely, 2^225587297 is an apocalyptic number.

It is an amenable number.

225587297 is a deficient number, since it is larger than the sum of its proper divisors (31643719).

225587297 is a wasteful number, since it uses less digits than its factorization.

225587297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020787.

The product of its digits is 705600, while the sum is 47.

The square root of 225587297 is about 15019.5638085798. The cubic root of 225587297 is about 608.7489337121.

The spelling of 225587297 in words is "two hundred twenty-five million, five hundred eighty-seven thousand, two hundred ninety-seven".