225144929 has 4 divisors (see below), whose sum is σ = 227137476. Its totient is φ = 223152384.

The previous prime is 225144911. The next prime is 225144943. The reversal of 225144929 is 929441522.

225144929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 929441522 = 2 ⋅464720761.

It can be written as a sum of positive squares in 2 ways, for example, as 91164304 + 133980625 = 9548^2 + 11575^2 .

It is a cyclic number.

It is not a de Polignac number, because 225144929 - 2²⁴ = 208367713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225144892 and 225144901.

It is not an unprimeable number, because it can be changed into a prime (225143929) 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, 996104 + ... + 996329.

It is an arithmetic number, because the mean of its divisors is an integer number (56784369).

Almost surely, 2^225144929 is an apocalyptic number.

It is an amenable number.

225144929 is a deficient number, since it is larger than the sum of its proper divisors (1992547).

225144929 is a wasteful number, since it uses less digits than its factorization.

225144929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992546.

The product of its digits is 51840, while the sum is 38.

The square root of 225144929 is about 15004.8301889758. The cubic root of 225144929 is about 608.3507622621.

The spelling of 225144929 in words is "two hundred twenty-five million, one hundred forty-four thousand, nine hundred twenty-nine".