225687071 has 4 divisors (see below), whose sum is σ = 226030200. Its totient is φ = 225343944.

The previous prime is 225687047. The next prime is 225687097. The reversal of 225687071 is 170786522.

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

It is a cyclic number.

It is not a de Polignac number, because 225687071 - 2²⁶ = 158578207 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 (225687031) 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, 170576 + ... + 171893.

It is an arithmetic number, because the mean of its divisors is an integer number (56507550).

Almost surely, 2^225687071 is an apocalyptic number.

225687071 is a deficient number, since it is larger than the sum of its proper divisors (343129).

225687071 is an equidigital number, since it uses as much as digits as its factorization.

225687071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343128.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 225687071 is about 15022.8849093641. The cubic root of 225687071 is about 608.8386674348.

The spelling of 225687071 in words is "two hundred twenty-five million, six hundred eighty-seven thousand, seventy-one".