225974538 has 12 divisors (see below), whose sum is σ = 489611538. Its totient is φ = 75324840.

The previous prime is 225974537. The next prime is 225974569. The reversal of 225974538 is 835479522.

225974538 is a `hidden beast` number, since 2 + 2 + 597 + 4 + 53 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 141205689 + 84768849 = 11883^2 + 9207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 225974493 and 225974502.

It is not an unprimeable number, because it can be changed into a prime (225974533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6277053 + ... + 6277088.

Almost surely, 2^225974538 is an apocalyptic number.

225974538 is an abundant number, since it is smaller than the sum of its proper divisors (263637000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225974538 is a wasteful number, since it uses less digits than its factorization.

225974538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12554149 (or 12554146 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 225974538 is about 15032.4495009962. The cubic root of 225974538 is about 609.0970587942.

The spelling of 225974538 in words is "two hundred twenty-five million, nine hundred seventy-four thousand, five hundred thirty-eight".