315025520 has 20 divisors (see below), whose sum is σ = 732434520. Its totient is φ = 126010176.

The previous prime is 315025507. The next prime is 315025523. The reversal of 315025520 is 25520513.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315025523) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1968830 + ... + 1968989.

It is an arithmetic number, because the mean of its divisors is an integer number (36621726).

Almost surely, 2^315025520 is an apocalyptic number.

It is an amenable number.

315025520 is an abundant number, since it is smaller than the sum of its proper divisors (417409000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315025520 is a wasteful number, since it uses less digits than its factorization.

315025520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937832 (or 3937826 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 315025520 is about 17748.9582792906. The cubic root of 315025520 is about 680.4275857479.

The spelling of 315025520 in words is "three hundred fifteen million, twenty-five thousand, five hundred twenty".