225144646 has 8 divisors (see below), whose sum is σ = 345570984. Its totient is φ = 109954320.

The previous prime is 225144641. The next prime is 225144671. The reversal of 225144646 is 646441522.

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

It is a super-2 number, since 2×225144646² = 101380223244930632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225144641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308895 + ... + 1309066.

It is an arithmetic number, because the mean of its divisors is an integer number (43196373).

Almost surely, 2^225144646 is an apocalyptic number.

225144646 is a deficient number, since it is larger than the sum of its proper divisors (120426338).

225144646 is a wasteful number, since it uses less digits than its factorization.

225144646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618006.

The product of its digits is 46080, while the sum is 34.

The square root of 225144646 is about 15004.8207586762. The cubic root of 225144646 is about 608.3505073694.

The spelling of 225144646 in words is "two hundred twenty-five million, one hundred forty-four thousand, six hundred forty-six".