225156671 has 2 divisors, whose sum is σ = 225156672. Its totient is φ = 225156670.

The previous prime is 225156641. The next prime is 225156677. The reversal of 225156671 is 176651522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225156671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225156677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112578335 + 112578336.

It is an arithmetic number, because the mean of its divisors is an integer number (112578336).

Almost surely, 2^225156671 is an apocalyptic number.

225156671 is a deficient number, since it is larger than the sum of its proper divisors (1).

225156671 is an equidigital number, since it uses as much as digits as its factorization.

225156671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 225156671 is about 15005.2214578793. The cubic root of 225156671 is about 608.3613378655.

The spelling of 225156671 in words is "two hundred twenty-five million, one hundred fifty-six thousand, six hundred seventy-one".