130511525 has 12 divisors (see below), whose sum is σ = 162095652. Its totient is φ = 104240640.

The previous prime is 130511503. The next prime is 130511587. The reversal of 130511525 is 525115031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 391876 + 130119649 = 626^2 + 11407^2 .

It is not a de Polignac number, because 130511525 - 2¹⁸ = 130249381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130511525.

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, 12947 + ... + 20703.

It is an arithmetic number, because the mean of its divisors is an integer number (13507971).

Almost surely, 2^130511525 is an apocalyptic number.

It is an amenable number.

130511525 is a deficient number, since it is larger than the sum of its proper divisors (31584127).

130511525 is an equidigital number, since it uses as much as digits as its factorization.

130511525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440 (or 8435 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 130511525 is about 11424.1640832054. The cubic root of 130511525 is about 507.2432635764.

Adding to 130511525 its reverse (525115031), we get a palindrome (655626556).

The spelling of 130511525 in words is "one hundred thirty million, five hundred eleven thousand, five hundred twenty-five".