225729176213 has 8 divisors (see below), whose sum is σ = 233563051800. Its totient is φ = 217898641408.

The previous prime is 225729176209. The next prime is 225729176279. The reversal of 225729176213 is 312671927522.

It can be written as a sum of positive squares in 4 ways, for example, as 155486685124 + 70242491089 = 394318^2 + 265033^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 225729176213 - 2² = 225729176209 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 (225729176203) 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 7 ways as a sum of consecutive naturals, for example, 697328 + ... + 968361.

It is an arithmetic number, because the mean of its divisors is an integer number (29195381475).

Almost surely, 2^225729176213 is an apocalyptic number.

It is an amenable number.

225729176213 is a deficient number, since it is larger than the sum of its proper divisors (7833875587).

225729176213 is a wasteful number, since it uses less digits than its factorization.

225729176213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670391.

The product of its digits is 635040, while the sum is 47.

The spelling of 225729176213 in words is "two hundred twenty-five billion, seven hundred twenty-nine million, one hundred seventy-six thousand, two hundred thirteen".