1525536531 has 32 divisors (see below), whose sum is σ = 2423347200. Its totient is φ = 945060480.

The previous prime is 1525536521. The next prime is 1525536547. The reversal of 1525536531 is 1356355251.

1525536531 is a `hidden beast` number, since 1 + 52 + 553 + 6 + 53 + 1 = 666.

It is not a de Polignac number, because 1525536531 - 2⁷ = 1525536403 is a prime.

It is a super-2 number, since 2×1525536531² = 4654523414831027922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1525536521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15226 + ... + 57296.

It is an arithmetic number, because the mean of its divisors is an integer number (75729600).

Almost surely, 2^1525536531 is an apocalyptic number.

1525536531 is a deficient number, since it is larger than the sum of its proper divisors (897810669).

1525536531 is a wasteful number, since it uses less digits than its factorization.

1525536531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42176 (or 42170 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 1525536531 is about 39058.1173509426. The cubic root of 1525536531 is about 1151.1737306899.

The spelling of 1525536531 in words is "one billion, five hundred twenty-five million, five hundred thirty-six thousand, five hundred thirty-one".