225604499 has 4 divisors (see below), whose sum is σ = 237478440. Its totient is φ = 213730560.

The previous prime is 225604481. The next prime is 225604513. The reversal of 225604499 is 994406522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 994406522 = 2 ⋅497203261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225604499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225604439) 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, 5936942 + ... + 5936979.

It is an arithmetic number, because the mean of its divisors is an integer number (59369610).

Almost surely, 2^225604499 is an apocalyptic number.

225604499 is a deficient number, since it is larger than the sum of its proper divisors (11873941).

225604499 is a wasteful number, since it uses less digits than its factorization.

225604499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873940.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 225604499 is about 15020.1364507783. The cubic root of 225604499 is about 608.7644065588.

The spelling of 225604499 in words is "two hundred twenty-five million, six hundred four thousand, four hundred ninety-nine".