225328537 has 4 divisors (see below), whose sum is σ = 257518336. Its totient is φ = 193138740.

The previous prime is 225328531. The next prime is 225328541. The reversal of 225328537 is 735823522.

It is a happy number.

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 225328537 - 2¹¹ = 225326489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225328496 and 225328505.

It is not an unprimeable number, because it can be changed into a prime (225328531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16094889 + ... + 16094902.

It is an arithmetic number, because the mean of its divisors is an integer number (64379584).

Almost surely, 2^225328537 is an apocalyptic number.

It is an amenable number.

225328537 is a deficient number, since it is larger than the sum of its proper divisors (32189799).

225328537 is an equidigital number, since it uses as much as digits as its factorization.

225328537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32189798.

The product of its digits is 100800, while the sum is 37.

The square root of 225328537 is about 15010.9472385989. The cubic root of 225328537 is about 608.5160894247.

The spelling of 225328537 in words is "two hundred twenty-five million, three hundred twenty-eight thousand, five hundred thirty-seven".