225315331 has 4 divisors (see below), whose sum is σ = 238569192. Its totient is φ = 212061472.

The previous prime is 225315289. The next prime is 225315353. The reversal of 225315331 is 133513522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133513522 = 2 ⋅66756761.

It is a cyclic number.

It is not a de Polignac number, because 225315331 - 2¹³ = 225307139 is a prime.

It is a super-2 number, since 2×225315331² = 101533996767279122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225315296 and 225315305.

It is not an unprimeable number, because it can be changed into a prime (225315361) 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, 6626905 + ... + 6626938.

It is an arithmetic number, because the mean of its divisors is an integer number (59642298).

Almost surely, 2^225315331 is an apocalyptic number.

225315331 is a deficient number, since it is larger than the sum of its proper divisors (13253861).

225315331 is a wasteful number, since it uses less digits than its factorization.

225315331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13253860.

The product of its digits is 2700, while the sum is 25.

The square root of 225315331 is about 15010.5073531843. The cubic root of 225315331 is about 608.5042012715.

Adding to 225315331 its reverse (133513522), we get a palindrome (358828853).

The spelling of 225315331 in words is "two hundred twenty-five million, three hundred fifteen thousand, three hundred thirty-one".