1531132525 has 24 divisors (see below), whose sum is σ = 2046542624. Its totient is φ = 1129636800.

The previous prime is 1531132511. The next prime is 1531132553. The reversal of 1531132525 is 5252311351.

It is not a de Polignac number, because 1531132525 - 2²⁷ = 1396914797 is a prime.

It is a super-2 number, since 2×1531132525² = 4688733618225751250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1531132493 and 1531132502.

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 23 ways as a sum of consecutive naturals, for example, 644590 + ... + 646960.

Almost surely, 2^1531132525 is an apocalyptic number.

It is an amenable number.

1531132525 is a deficient number, since it is larger than the sum of its proper divisors (515410099).

1531132525 is a wasteful number, since it uses less digits than its factorization.

1531132525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4376 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 1531132525 is about 39129.6885369664. The cubic root of 1531132525 is about 1152.5795968321.

Adding to 1531132525 its reverse (5252311351), we get a palindrome (6783443876).

The spelling of 1531132525 in words is "one billion, five hundred thirty-one million, one hundred thirty-two thousand, five hundred twenty-five".