225849131 has 4 divisors (see below), whose sum is σ = 239134392. Its totient is φ = 212563872.

The previous prime is 225849119. The next prime is 225849157. The reversal of 225849131 is 131948522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225849131 is a prime.

It is a super-2 number, since 2×225849131² = 102015659946910322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225849091 and 225849100.

It is not an unprimeable number, because it can be changed into a prime (225849101) 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 3 ways as a sum of consecutive naturals, for example, 6642605 + ... + 6642638.

It is an arithmetic number, because the mean of its divisors is an integer number (59783598).

Almost surely, 2^225849131 is an apocalyptic number.

225849131 is a deficient number, since it is larger than the sum of its proper divisors (13285261).

225849131 is a wasteful number, since it uses less digits than its factorization.

225849131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13285260.

The product of its digits is 17280, while the sum is 35.

The square root of 225849131 is about 15028.2777123661. The cubic root of 225849131 is about 608.9843629567.

It can be divided in two parts, 2258491 and 31, that added together give a palindrome (2258522).

The spelling of 225849131 in words is "two hundred twenty-five million, eight hundred forty-nine thousand, one hundred thirty-one".