315225257 has 8 divisors (see below), whose sum is σ = 332030400. Its totient is φ = 298441584.

The previous prime is 315225241. The next prime is 315225277. The reversal of 315225257 is 752522513.

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 315225257 - 2⁴ = 315225241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315225277) 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, 31244 + ... + 40082.

It is an arithmetic number, because the mean of its divisors is an integer number (41503800).

Almost surely, 2^315225257 is an apocalyptic number.

It is an amenable number.

315225257 is a deficient number, since it is larger than the sum of its proper divisors (16805143).

315225257 is a wasteful number, since it uses less digits than its factorization.

315225257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735.

The product of its digits is 21000, while the sum is 32.

The square root of 315225257 is about 17754.5841122793. The cubic root of 315225257 is about 680.5713601863.

The spelling of 315225257 in words is "three hundred fifteen million, two hundred twenty-five thousand, two hundred fifty-seven".