225335639 has 4 divisors (see below), whose sum is σ = 226828080. Its totient is φ = 223843200.

The previous prime is 225335633. The next prime is 225335657. The reversal of 225335639 is 936533522.

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

It is a cyclic number.

It is not a de Polignac number, because 225335639 - 2¹⁶ = 225270103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225335633) 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, 745994 + ... + 746295.

It is an arithmetic number, because the mean of its divisors is an integer number (56707020).

Almost surely, 2^225335639 is an apocalyptic number.

225335639 is a deficient number, since it is larger than the sum of its proper divisors (1492441).

225335639 is a wasteful number, since it uses less digits than its factorization.

225335639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492440.

The product of its digits is 145800, while the sum is 38.

The square root of 225335639 is about 15011.1837974225. The cubic root of 225335639 is about 608.5224825132.

The spelling of 225335639 in words is "two hundred twenty-five million, three hundred thirty-five thousand, six hundred thirty-nine".