1315143825 has 24 divisors (see below), whose sum is σ = 2175569088. Its totient is φ = 701023680.

The previous prime is 1315143811. The next prime is 1315143847. The reversal of 1315143825 is 5283415131.

It is not a de Polignac number, because 1315143825 - 2¹⁴ = 1315127441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178107 + ... + 185343.

It is an arithmetic number, because the mean of its divisors is an integer number (90648712).

Almost surely, 2^1315143825 is an apocalyptic number.

1315143825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315143825 is a deficient number, since it is larger than the sum of its proper divisors (860425263).

1315143825 is a wasteful number, since it uses less digits than its factorization.

1315143825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9673 (or 9668 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 1315143825 is about 36264.9117605434. The cubic root of 1315143825 is about 1095.6144463307.

Adding to 1315143825 its reverse (5283415131), we get a palindrome (6598558956).

The spelling of 1315143825 in words is "one billion, three hundred fifteen million, one hundred forty-three thousand, eight hundred twenty-five".