1315125161 has 6 divisors (see below), whose sum is σ = 1529839530. Its totient is φ = 1127250096.

The previous prime is 1315125103. The next prime is 1315125179. The reversal of 1315125161 is 1615215131.

It can be written as a sum of positive squares in only one way, i.e., 1314787600 + 337561 = 36260^2 + 581^2 .

It is not a de Polignac number, because 1315125161 - 2¹⁰ = 1315124137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315125161.

It is not an unprimeable number, because it can be changed into a prime (1315155161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13419596 + ... + 13419693.

It is an arithmetic number, because the mean of its divisors is an integer number (254973255).

Almost surely, 2^1315125161 is an apocalyptic number.

It is an amenable number.

1315125161 is a deficient number, since it is larger than the sum of its proper divisors (214714369).

1315125161 is an equidigital number, since it uses as much as digits as its factorization.

1315125161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26839303 (or 26839296 counting only the distinct ones).

The product of its digits is 900, while the sum is 26.

The square root of 1315125161 is about 36264.6544310021. The cubic root of 1315125161 is about 1095.6092634642.

The spelling of 1315125161 in words is "one billion, three hundred fifteen million, one hundred twenty-five thousand, one hundred sixty-one".