1312525158 has 32 divisors (see below), whose sum is σ = 3001261056. Its totient is φ = 374856768.

The previous prime is 1312525157. The next prime is 1312525183. The reversal of 1312525158 is 8515252131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312525157) 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 15 ways as a sum of consecutive naturals, for example, 139635 + ... + 148737.

It is an arithmetic number, because the mean of its divisors is an integer number (93789408).

Almost surely, 2^1312525158 is an apocalyptic number.

1312525158 is an abundant number, since it is smaller than the sum of its proper divisors (1688735898).

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

1312525158 is a wasteful number, since it uses less digits than its factorization.

1312525158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12548.

The product of its digits is 12000, while the sum is 33.

The square root of 1312525158 is about 36228.7890771966. The cubic root of 1312525158 is about 1094.8867804792.

Adding to 1312525158 its reverse (8515252131), we get a palindrome (9827777289).

It can be divided in two parts, 13125 and 25158, that added together give a palindrome (38283).

The spelling of 1312525158 in words is "one billion, three hundred twelve million, five hundred twenty-five thousand, one hundred fifty-eight".