225531412813 has 4 divisors (see below), whose sum is σ = 257750186080. Its totient is φ = 193312639548.

The previous prime is 225531412787. The next prime is 225531412819. The reversal of 225531412813 is 318214135522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-225531412813 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 (225531412819) 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, 16109386623 + ... + 16109386636.

It is an arithmetic number, because the mean of its divisors is an integer number (64437546520).

Almost surely, 2^225531412813 is an apocalyptic number.

It is an amenable number.

225531412813 is a deficient number, since it is larger than the sum of its proper divisors (32218773267).

225531412813 is an equidigital number, since it uses as much as digits as its factorization.

225531412813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32218773266.

The product of its digits is 57600, while the sum is 37.

The spelling of 225531412813 in words is "two hundred twenty-five billion, five hundred thirty-one million, four hundred twelve thousand, eight hundred thirteen".