225970993 has 4 divisors (see below), whose sum is σ = 226001920. Its totient is φ = 225940068.

The previous prime is 225970981. The next prime is 225971027. The reversal of 225970993 is 399079522.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225970993 - 2⁵ = 225970961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225970963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296 + ... + 21382.

It is an arithmetic number, because the mean of its divisors is an integer number (56500480).

Almost surely, 2^225970993 is an apocalyptic number.

It is an amenable number.

225970993 is a deficient number, since it is larger than the sum of its proper divisors (30927).

225970993 is a wasteful number, since it uses less digits than its factorization.

225970993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30926.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 225970993 is about 15032.3315889452. The cubic root of 225970993 is about 609.0938736856.

The spelling of 225970993 in words is "two hundred twenty-five million, nine hundred seventy thousand, nine hundred ninety-three".