11525960487421 has 2 divisors, whose sum is σ = 11525960487422. Its totient is φ = 11525960487420.

The previous prime is 11525960487317. The next prime is 11525960487449. The reversal of 11525960487421 is 12478406952511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7992635765625 + 3533324721796 = 2827125^2 + 1879714^2 .

It is a cyclic number.

It is not a de Polignac number, because 11525960487421 - 2³³ = 11517370552829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11525960487521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762980243710 + 5762980243711.

It is an arithmetic number, because the mean of its divisors is an integer number (5762980243711).

Almost surely, 2^{11525960487421} is an apocalyptic number.

It is an amenable number.

11525960487421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525960487421 is an equidigital number, since it uses as much as digits as its factorization.

11525960487421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 11525960487421 in words is "eleven trillion, five hundred twenty-five billion, nine hundred sixty million, four hundred eighty-seven thousand, four hundred twenty-one".