25813793491523 has 2 divisors, whose sum is σ = 25813793491524. Its totient is φ = 25813793491522.

The previous prime is 25813793491457. The next prime is 25813793491531. The reversal of 25813793491523 is 32519439731852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25813793491523 - 2²⁰ = 25813792442947 is a prime.

It is not a weakly prime, because it can be changed into another prime (25813793491573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12906896745761 + 12906896745762.

It is an arithmetic number, because the mean of its divisors is an integer number (12906896745762).

Almost surely, 2^{25813793491523} is an apocalyptic number.

25813793491523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25813793491523 is an equidigital number, since it uses as much as digits as its factorization.

25813793491523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48988800, while the sum is 62.

The spelling of 25813793491523 in words is "twenty-five trillion, eight hundred thirteen billion, seven hundred ninety-three million, four hundred ninety-one thousand, five hundred twenty-three".