225324776165 has 4 divisors (see below), whose sum is σ = 270389731404. Its totient is φ = 180259820928.

The previous prime is 225324776153. The next prime is 225324776179. The reversal of 225324776165 is 561677423522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 139900685089 + 85424091076 = 374033^2 + 292274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225324776165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22532477612 + ... + 22532477621.

It is an arithmetic number, because the mean of its divisors is an integer number (67597432851).

Almost surely, 2^225324776165 is an apocalyptic number.

It is an amenable number.

225324776165 is a deficient number, since it is larger than the sum of its proper divisors (45064955239).

225324776165 is an equidigital number, since it uses as much as digits as its factorization.

225324776165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45064955238.

The product of its digits is 4233600, while the sum is 50.

The spelling of 225324776165 in words is "two hundred twenty-five billion, three hundred twenty-four million, seven hundred seventy-six thousand, one hundred sixty-five".