225451018 has 8 divisors (see below), whose sum is σ = 364190148. Its totient is φ = 104054304.

The previous prime is 225451013. The next prime is 225451019. The reversal of 225451018 is 810154522.

It can be written as a sum of positive squares in 2 ways, for example, as 224790049 + 660969 = 14993^2 + 813^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (225451013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4335571 + ... + 4335622.

Almost surely, 2^225451018 is an apocalyptic number.

225451018 is a deficient number, since it is larger than the sum of its proper divisors (138739130).

225451018 is a wasteful number, since it uses less digits than its factorization.

225451018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8671208.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 225451018 is about 15015.0264069032. The cubic root of 225451018 is about 608.6263257340.

The spelling of 225451018 in words is "two hundred twenty-five million, four hundred fifty-one thousand, eighteen".