315797825 has 12 divisors (see below), whose sum is σ = 447530880. Its totient is φ = 216546960.

The previous prime is 315797821. The next prime is 315797857. The reversal of 315797825 is 528797513.

It is not a de Polignac number, because 315797825 - 2² = 315797821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315797825.

It is not an unprimeable number, because it can be changed into a prime (315797821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 902105 + ... + 902454.

It is an arithmetic number, because the mean of its divisors is an integer number (37294240).

Almost surely, 2^315797825 is an apocalyptic number.

315797825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

315797825 is a deficient number, since it is larger than the sum of its proper divisors (131733055).

315797825 is a wasteful number, since it uses less digits than its factorization.

315797825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804576 (or 1804571 counting only the distinct ones).

The product of its digits is 529200, while the sum is 47.

The square root of 315797825 is about 17770.7013086147. The cubic root of 315797825 is about 680.9831690758.

The spelling of 315797825 in words is "three hundred fifteen million, seven hundred ninety-seven thousand, eight hundred twenty-five".