225497439 has 12 divisors (see below), whose sum is σ = 337782536. Its totient is φ = 150331464.

The previous prime is 225497387. The next prime is 225497443. The reversal of 225497439 is 934794522.

225497439 is a `hidden beast` number, since 2 + 2 + 549 + 74 + 39 = 666.

It is not a de Polignac number, because 225497439 - 2⁸ = 225497183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225497394 and 225497403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225497449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463744 + ... + 464229.

Almost surely, 2^225497439 is an apocalyptic number.

225497439 is a deficient number, since it is larger than the sum of its proper divisors (112285097).

225497439 is an frugal number, since it uses more digits than its factorization.

225497439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927988 (or 927976 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 225497439 is about 15016.5721454665. The cubic root of 225497439 is about 608.6680954926.

The spelling of 225497439 in words is "two hundred twenty-five million, four hundred ninety-seven thousand, four hundred thirty-nine".