225851847 has 16 divisors (see below), whose sum is σ = 326860800. Its totient is φ = 137888352.

The previous prime is 225851839. The next prime is 225851861. The reversal of 225851847 is 748158522.

It is not a de Polignac number, because 225851847 - 2³ = 225851839 is a prime.

It is a super-2 number, since 2×225851847² = 102018113586622818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225851799 and 225851808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225851807) 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 15 ways as a sum of consecutive naturals, for example, 17847 + ... + 27752.

It is an arithmetic number, because the mean of its divisors is an integer number (20428800).

Almost surely, 2^225851847 is an apocalyptic number.

225851847 is a deficient number, since it is larger than the sum of its proper divisors (101008953).

225851847 is a wasteful number, since it uses less digits than its factorization.

225851847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45742.

The product of its digits is 179200, while the sum is 42.

The square root of 225851847 is about 15028.3680750772. The cubic root of 225851847 is about 608.9868041069.

The spelling of 225851847 in words is "two hundred twenty-five million, eight hundred fifty-one thousand, eight hundred forty-seven".