315245225 has 12 divisors (see below), whose sum is σ = 404384460. Its totient is φ = 243499200.

The previous prime is 315245179. The next prime is 315245233. The reversal of 315245225 is 522542513.

It can be written as a sum of positive squares in 6 ways, for example, as 2768896 + 312476329 = 1664^2 + 17677^2 .

It is not a de Polignac number, because 315245225 - 2¹⁰ = 315244201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216686 + ... + 218135.

It is an arithmetic number, because the mean of its divisors is an integer number (33698705).

Almost surely, 2^315245225 is an apocalyptic number.

It is an amenable number.

315245225 is a deficient number, since it is larger than the sum of its proper divisors (89139235).

315245225 is a wasteful number, since it uses less digits than its factorization.

315245225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434860 (or 434855 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 315245225 is about 17755.1464370193. The cubic root of 315245225 is about 680.5857301875.

Adding to 315245225 its reverse (522542513), we get a palindrome (837787738).

The spelling of 315245225 in words is "three hundred fifteen million, two hundred forty-five thousand, two hundred twenty-five".