1315161525 has 48 divisors (see below), whose sum is σ = 2225337728. Its totient is φ = 685152000.

The previous prime is 1315161517. The next prime is 1315161539. The reversal of 1315161525 is 5251615131.

It is not a de Polignac number, because 1315161525 - 2³ = 1315161517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1315161492 and 1315161501.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 717360 + ... + 719190.

Almost surely, 2^1315161525 is an apocalyptic number.

1315161525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315161525 is a deficient number, since it is larger than the sum of its proper divisors (910176203).

1315161525 is a wasteful number, since it uses less digits than its factorization.

1315161525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062 (or 2057 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 1315161525 is about 36265.1557972663. The cubic root of 1315161525 is about 1095.6193614557.

Adding to 1315161525 its reverse (5251615131), we get a palindrome (6566776656).

The spelling of 1315161525 in words is "one billion, three hundred fifteen million, one hundred sixty-one thousand, five hundred twenty-five".