25532509523 has 2 divisors, whose sum is σ = 25532509524. Its totient is φ = 25532509522.

The previous prime is 25532509417. The next prime is 25532509579. The reversal of 25532509523 is 32590523552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25532509523 - 2⁸ = 25532509267 is a prime.

It is not a weakly prime, because it can be changed into another prime (25532506523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766254761 + 12766254762.

It is an arithmetic number, because the mean of its divisors is an integer number (12766254762).

Almost surely, 2^25532509523 is an apocalyptic number.

25532509523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25532509523 is an equidigital number, since it uses as much as digits as its factorization.

25532509523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405000, while the sum is 41.

The spelling of 25532509523 in words is "twenty-five billion, five hundred thirty-two million, five hundred nine thousand, five hundred twenty-three".