225779959 has 4 divisors (see below), whose sum is σ = 225819400. Its totient is φ = 225740520.

The previous prime is 225779933. The next prime is 225779987. The reversal of 225779959 is 959977522.

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-225779959 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 (225779909) 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, 9297 + ... + 23194.

It is an arithmetic number, because the mean of its divisors is an integer number (56454850).

Almost surely, 2^225779959 is an apocalyptic number.

225779959 is a deficient number, since it is larger than the sum of its proper divisors (39441).

225779959 is an equidigital number, since it uses as much as digits as its factorization.

225779959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39440.

The product of its digits is 3572100, while the sum is 55.

The square root of 225779959 is about 15025.9761413360. The cubic root of 225779959 is about 608.9221843282.

The spelling of 225779959 in words is "two hundred twenty-five million, seven hundred seventy-nine thousand, nine hundred fifty-nine".