225759993 has 4 divisors (see below), whose sum is σ = 301013328. Its totient is φ = 150506660.

The previous prime is 225759979. The next prime is 225760009. The reversal of 225759993 is 399957522.

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 225759993 - 2²² = 221565689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225759943) 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, 37626663 + ... + 37626668.

It is an arithmetic number, because the mean of its divisors is an integer number (75253332).

Almost surely, 2^225759993 is an apocalyptic number.

It is an amenable number.

225759993 is a deficient number, since it is larger than the sum of its proper divisors (75253335).

225759993 is an equidigital number, since it uses as much as digits as its factorization.

225759993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75253334.

The product of its digits is 1530900, while the sum is 51.

The square root of 225759993 is about 15025.3117438541. The cubic root of 225759993 is about 608.9042345527.

The spelling of 225759993 in words is "two hundred twenty-five million, seven hundred fifty-nine thousand, nine hundred ninety-three".