225016247 has 4 divisors (see below), whose sum is σ = 226007736. Its totient is φ = 224024760.

The previous prime is 225016243. The next prime is 225016261. The reversal of 225016247 is 742610522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225016247 - 2² = 225016243 is a prime.

It is a super-2 number, since 2×225016247² = 101264622827930018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225016243) 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, 495404 + ... + 495857.

It is an arithmetic number, because the mean of its divisors is an integer number (56501934).

Almost surely, 2^225016247 is an apocalyptic number.

225016247 is a deficient number, since it is larger than the sum of its proper divisors (991489).

225016247 is an equidigital number, since it uses as much as digits as its factorization.

225016247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991488.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 225016247 is about 15000.5415568905. The cubic root of 225016247 is about 608.2348388399.

Adding to 225016247 its reverse (742610522), we get a palindrome (967626769).

The spelling of 225016247 in words is "two hundred twenty-five million, sixteen thousand, two hundred forty-seven".