225144745 has 8 divisors (see below), whose sum is σ = 308769984. Its totient is φ = 154384944.

The previous prime is 225144739. The next prime is 225144749. The reversal of 225144745 is 547441522.

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

It is not a de Polignac number, because 225144745 - 2¹³ = 225136553 is a prime.

It is a super-2 number, since 2×225144745² = 101380312402230050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225144745.

It is not an unprimeable number, because it can be changed into a prime (225144749) 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, 3216319 + ... + 3216388.

It is an arithmetic number, because the mean of its divisors is an integer number (38596248).

Almost surely, 2^225144745 is an apocalyptic number.

It is an amenable number.

225144745 is a deficient number, since it is larger than the sum of its proper divisors (83625239).

225144745 is an equidigital number, since it uses as much as digits as its factorization.

225144745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6432719.

The product of its digits is 44800, while the sum is 34.

The square root of 225144745 is about 15004.8240576156. The cubic root of 225144745 is about 608.3505965369.

The spelling of 225144745 in words is "two hundred twenty-five million, one hundred forty-four thousand, seven hundred forty-five".