225645043 has 4 divisors (see below), whose sum is σ = 243002368. Its totient is φ = 208287720.

The previous prime is 225645041. The next prime is 225645047. The reversal of 225645043 is 340546522.

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

It is a cyclic number.

It is not a de Polignac number, because 225645043 - 2¹ = 225645041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225644996 and 225645014.

It is not an unprimeable number, because it can be changed into a prime (225645041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8678643 + ... + 8678668.

It is an arithmetic number, because the mean of its divisors is an integer number (60750592).

Almost surely, 2^225645043 is an apocalyptic number.

225645043 is a deficient number, since it is larger than the sum of its proper divisors (17357325).

225645043 is a wasteful number, since it uses less digits than its factorization.

225645043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17357324.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 225645043 is about 15021.4860449957. The cubic root of 225645043 is about 608.8008719452.

The spelling of 225645043 in words is "two hundred twenty-five million, six hundred forty-five thousand, forty-three".