225497437 has 4 divisors (see below), whose sum is σ = 245997216. Its totient is φ = 204997660.

The previous prime is 225497387. The next prime is 225497443. The reversal of 225497437 is 734794522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 225497437 - 2⁷ = 225497309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225497393 and 225497402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225497477) 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, 10249873 + ... + 10249894.

It is an arithmetic number, because the mean of its divisors is an integer number (61499304).

Almost surely, 2^225497437 is an apocalyptic number.

It is an amenable number.

225497437 is a deficient number, since it is larger than the sum of its proper divisors (20499779).

225497437 is a wasteful number, since it uses less digits than its factorization.

225497437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20499778.

The product of its digits is 423360, while the sum is 43.

The square root of 225497437 is about 15016.5720788734. The cubic root of 225497437 is about 608.6680936931.

The spelling of 225497437 in words is "two hundred twenty-five million, four hundred ninety-seven thousand, four hundred thirty-seven".