225689042 has 16 divisors (see below), whose sum is σ = 364525920. Its totient is φ = 104405568.

The previous prime is 225689039. The next prime is 225689047. The reversal of 225689042 is 240986522.

It is a junction number, because it is equal to n+sod(n) for n = 225688987 and 225689005.

It is not an unprimeable number, because it can be changed into a prime (225689047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54248 + ... + 58259.

It is an arithmetic number, because the mean of its divisors is an integer number (22782870).

Almost surely, 2^225689042 is an apocalyptic number.

225689042 is a deficient number, since it is larger than the sum of its proper divisors (138836878).

225689042 is a wasteful number, since it uses less digits than its factorization.

225689042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112585.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 225689042 is about 15022.9505091377. The cubic root of 225689042 is about 608.8404398263.

The spelling of 225689042 in words is "two hundred twenty-five million, six hundred eighty-nine thousand, forty-two".