225144647 has 8 divisors (see below), whose sum is σ = 277101216. Its totient is φ = 178136352.

The previous prime is 225144641. The next prime is 225144671. The reversal of 225144647 is 746441522.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 225144647 - 2¹⁰ = 225143623 is a prime.

It is a super-2 number, since 2×225144647² = 101380224145509218, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236968 + ... + 1237149.

It is an arithmetic number, because the mean of its divisors is an integer number (34637652).

Almost surely, 2^225144647 is an apocalyptic number.

225144647 is a deficient number, since it is larger than the sum of its proper divisors (51956569).

225144647 is a wasteful number, since it uses less digits than its factorization.

225144647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474137.

The product of its digits is 53760, while the sum is 35.

The square root of 225144647 is about 15004.8207919988. The cubic root of 225144647 is about 608.3505082701.

The spelling of 225144647 in words is "two hundred twenty-five million, one hundred forty-four thousand, six hundred forty-seven".