130525450521 has 4 divisors (see below), whose sum is σ = 174033934032. Its totient is φ = 87016967012.

The previous prime is 130525450513. The next prime is 130525450537. The reversal of 130525450521 is 125054525031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130525450521 - 2³ = 130525450513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130525450511) 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 3 ways as a sum of consecutive naturals, for example, 21754241751 + ... + 21754241756.

It is an arithmetic number, because the mean of its divisors is an integer number (43508483508).

Almost surely, 2^130525450521 is an apocalyptic number.

It is an amenable number.

130525450521 is a deficient number, since it is larger than the sum of its proper divisors (43508483511).

130525450521 is an equidigital number, since it uses as much as digits as its factorization.

130525450521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43508483510.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 130525450521 its reverse (125054525031), we get a palindrome (255579975552).

The spelling of 130525450521 in words is "one hundred thirty billion, five hundred twenty-five million, four hundred fifty thousand, five hundred twenty-one".