225065643 has 16 divisors (see below), whose sum is σ = 331856256. Its totient is φ = 134533440.

The previous prime is 225065639. The next prime is 225065653. The reversal of 225065643 is 346560522.

It is not a de Polignac number, because 225065643 - 2² = 225065639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (225065653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44305 + ... + 49122.

It is an arithmetic number, because the mean of its divisors is an integer number (20741016).

Almost surely, 2^225065643 is an apocalyptic number.

225065643 is a deficient number, since it is larger than the sum of its proper divisors (106790613).

225065643 is a wasteful number, since it uses less digits than its factorization.

225065643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93514.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 225065643 is about 15002.1879404306. The cubic root of 225065643 is about 608.2793425447.

The spelling of 225065643 in words is "two hundred twenty-five million, sixty-five thousand, six hundred forty-three".