225149643 has 12 divisors (see below), whose sum is σ = 325387608. Its totient is φ = 150020640.

The previous prime is 225149641. The next prime is 225149663. The reversal of 225149643 is 346941522.

It is a happy number.

225149643 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 4 + 9 + 643 = 666.

It is not a de Polignac number, because 225149643 - 2¹ = 225149641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225149598 and 225149607.

It is not an unprimeable number, because it can be changed into a prime (225149641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15228 + ... + 26118.

It is an arithmetic number, because the mean of its divisors is an integer number (27115634).

Almost surely, 2^225149643 is an apocalyptic number.

225149643 is a deficient number, since it is larger than the sum of its proper divisors (100237965).

225149643 is a wasteful number, since it uses less digits than its factorization.

225149643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194 (or 13191 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 225149643 is about 15004.9872709043. The cubic root of 225149643 is about 608.3550080391.

The spelling of 225149643 in words is "two hundred twenty-five million, one hundred forty-nine thousand, six hundred forty-three".