1532131525 has 12 divisors (see below), whose sum is σ = 1901171844. Its totient is φ = 1224848000.

The previous prime is 1532131493. The next prime is 1532131541. The reversal of 1532131525 is 5251312351.

It can be written as a sum of positive squares in 6 ways, for example, as 28398241 + 1503733284 = 5329^2 + 38778^2 .

It is not a de Polignac number, because 1532131525 - 2⁵ = 1532131493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1532131493 and 1532131502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16335 + ... + 57715.

It is an arithmetic number, because the mean of its divisors is an integer number (158430987).

Almost surely, 2^1532131525 is an apocalyptic number.

It is an amenable number.

1532131525 is a deficient number, since it is larger than the sum of its proper divisors (369040319).

1532131525 is a wasteful number, since it uses less digits than its factorization.

1532131525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42872 (or 42867 counting only the distinct ones).

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

The square root of 1532131525 is about 39142.4516988908. The cubic root of 1532131525 is about 1152.8302123448.

Adding to 1532131525 its reverse (5251312351), we get a palindrome (6783443876).

The spelling of 1532131525 in words is "one billion, five hundred thirty-two million, one hundred thirty-one thousand, five hundred twenty-five".