315225145 has 8 divisors (see below), whose sum is σ = 380809800. Its totient is φ = 250487040.

The previous prime is 315225137. The next prime is 315225191. The reversal of 315225145 is 541522513.

It can be written as a sum of positive squares in 4 ways, for example, as 18455616 + 296769529 = 4296^2 + 17227^2 .

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

It is not a de Polignac number, because 315225145 - 2³ = 315225137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210816 + ... + 212305.

It is an arithmetic number, because the mean of its divisors is an integer number (47601225).

Almost surely, 2^315225145 is an apocalyptic number.

It is an amenable number.

315225145 is a deficient number, since it is larger than the sum of its proper divisors (65584655).

315225145 is a wasteful number, since it uses less digits than its factorization.

315225145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423275.

The product of its digits is 6000, while the sum is 28.

The square root of 315225145 is about 17754.5809581640. The cubic root of 315225145 is about 680.5712795836.

Adding to 315225145 its reverse (541522513), we get a palindrome (856747658).

The spelling of 315225145 in words is "three hundred fifteen million, two hundred twenty-five thousand, one hundred forty-five".