225929939 has 4 divisors (see below), whose sum is σ = 229759320. Its totient is φ = 222100560.

The previous prime is 225929933. The next prime is 225929941. The reversal of 225929939 is 939929522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225929939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225929933) 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, 1914602 + ... + 1914719.

It is an arithmetic number, because the mean of its divisors is an integer number (57439830).

Almost surely, 2^225929939 is an apocalyptic number.

225929939 is a deficient number, since it is larger than the sum of its proper divisors (3829381).

225929939 is an equidigital number, since it uses as much as digits as its factorization.

225929939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829380.

The product of its digits is 787320, while the sum is 50.

The square root of 225929939 is about 15030.9660035541. The cubic root of 225929939 is about 609.0569850949.

The spelling of 225929939 in words is "two hundred twenty-five million, nine hundred twenty-nine thousand, nine hundred thirty-nine".