1232525521 has 2 divisors, whose sum is σ = 1232525522. Its totient is φ = 1232525520.

The previous prime is 1232525519. The next prime is 1232525527. The reversal of 1232525521 is 1255252321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 946239121 + 286286400 = 30761^2 + 16920^2 .

It is an emirp because it is prime and its reverse (1255252321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1232525521 - 2¹ = 1232525519 is a prime.

Together with 1232525519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1232525521.

It is not a weakly prime, because it can be changed into another prime (1232525527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616262760 + 616262761.

It is an arithmetic number, because the mean of its divisors is an integer number (616262761).

Almost surely, 2^1232525521 is an apocalyptic number.

It is an amenable number.

1232525521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232525521 is an equidigital number, since it uses as much as digits as its factorization.

1232525521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6000, while the sum is 28.

The square root of 1232525521 is about 35107.3428359368. The cubic root of 1232525521 is about 1072.1740874479.

Adding to 1232525521 its reverse (1255252321), we get a palindrome (2487777842).

The spelling of 1232525521 in words is "one billion, two hundred thirty-two million, five hundred twenty-five thousand, five hundred twenty-one".