4513125521 has 2 divisors, whose sum is σ = 4513125522. Its totient is φ = 4513125520.

The previous prime is 4513125503. The next prime is 4513125571. The reversal of 4513125521 is 1255213154.

4513125521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4065337600 + 447787921 = 63760^2 + 21161^2 .

It is a cyclic number.

It is not a de Polignac number, because 4513125521 - 2⁶ = 4513125457 is a prime.

It is not a weakly prime, because it can be changed into another prime (4513125571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2256562760 + 2256562761.

It is an arithmetic number, because the mean of its divisors is an integer number (2256562761).

Almost surely, 2^4513125521 is an apocalyptic number.

It is an amenable number.

4513125521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4513125521 is an equidigital number, since it uses as much as digits as its factorization.

4513125521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 29.

The square root of 4513125521 is about 67179.7999476033. The cubic root of 4513125521 is about 1652.5672335689.

Adding to 4513125521 its reverse (1255213154), we get a palindrome (5768338675).

The spelling of 4513125521 in words is "four billion, five hundred thirteen million, one hundred twenty-five thousand, five hundred twenty-one".