225517723165 has 8 divisors (see below), whose sum is σ = 309281448960. Its totient is φ = 154640724432.

The previous prime is 225517723141. The next prime is 225517723187. The reversal of 225517723165 is 561327715522.

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 225517723165 - 2⁷ = 225517723037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221681725 + ... + 3221681794.

It is an arithmetic number, because the mean of its divisors is an integer number (38660181120).

Almost surely, 2^225517723165 is an apocalyptic number.

It is an amenable number.

225517723165 is a deficient number, since it is larger than the sum of its proper divisors (83763725795).

225517723165 is an equidigital number, since it uses as much as digits as its factorization.

225517723165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443363531.

The product of its digits is 882000, while the sum is 46.

The spelling of 225517723165 in words is "two hundred twenty-five billion, five hundred seventeen million, seven hundred twenty-three thousand, one hundred sixty-five".