315865739825 has 12 divisors (see below), whose sum is σ = 393937531548. Its totient is φ = 251231937600.

The previous prime is 315865739821. The next prime is 315865739857. The reversal of 315865739825 is 528937568513.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 10718875024 + 305146864801 = 103532^2 + 552401^2 .

It is not a de Polignac number, because 315865739825 - 2² = 315865739821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315865739821) 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, 36511946 + ... + 36520595.

It is an arithmetic number, because the mean of its divisors is an integer number (32828127629).

Almost surely, 2^315865739825 is an apocalyptic number.

It is an amenable number.

315865739825 is a deficient number, since it is larger than the sum of its proper divisors (78071791723).

315865739825 is a wasteful number, since it uses less digits than its factorization.

315865739825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73032724 (or 73032719 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 62.

The spelling of 315865739825 in words is "three hundred fifteen billion, eight hundred sixty-five million, seven hundred thirty-nine thousand, eight hundred twenty-five".