225808739 has 8 divisors (see below), whose sum is σ = 257483520. Its totient is φ = 196177536.

The previous prime is 225808699. The next prime is 225808741. The reversal of 225808739 is 937808522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225808739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225808739.

It is not an unprimeable number, because it can be changed into a prime (225808799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510659 + ... + 511100.

It is an arithmetic number, because the mean of its divisors is an integer number (32185440).

Almost surely, 2^225808739 is an apocalyptic number.

225808739 is a deficient number, since it is larger than the sum of its proper divisors (31674781).

225808739 is a wasteful number, since it uses less digits than its factorization.

225808739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021789.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 225808739 is about 15026.9337857063. The cubic root of 225808739 is about 608.9480561785.

The spelling of 225808739 in words is "two hundred twenty-five million, eight hundred eight thousand, seven hundred thirty-nine".