315117225 has 36 divisors (see below), whose sum is σ = 568771632. Its totient is φ = 166764000.

The previous prime is 315117217. The next prime is 315117233. The reversal of 315117225 is 522711513.

It is an interprime number because it is at equal distance from previous prime (315117217) and next prime (315117233).

It is not a de Polignac number, because 315117225 - 2³ = 315117217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24130 + ... + 34820.

It is an arithmetic number, because the mean of its divisors is an integer number (15799212).

Almost surely, 2^315117225 is an apocalyptic number.

It is an amenable number.

315117225 is a deficient number, since it is larger than the sum of its proper divisors (253654407).

315117225 is a wasteful number, since it uses less digits than its factorization.

315117225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838 (or 10830 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 315117225 is about 17751.5414823615. The cubic root of 315117225 is about 680.4936042702.

Adding to 315117225 its reverse (522711513), we get a palindrome (837828738).

The spelling of 315117225 in words is "three hundred fifteen million, one hundred seventeen thousand, two hundred twenty-five".