25525553507 has 2 divisors, whose sum is σ = 25525553508. Its totient is φ = 25525553506.

The previous prime is 25525553491. The next prime is 25525553513. The reversal of 25525553507 is 70535552552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25525553507 - 2⁴ = 25525553491 is a prime.

It is not a weakly prime, because it can be changed into another prime (25525553527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762776753 + 12762776754.

It is an arithmetic number, because the mean of its divisors is an integer number (12762776754).

Almost surely, 2^25525553507 is an apocalyptic number.

25525553507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25525553507 is an equidigital number, since it uses as much as digits as its factorization.

25525553507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1312500, while the sum is 44.

The spelling of 25525553507 in words is "twenty-five billion, five hundred twenty-five million, five hundred fifty-three thousand, five hundred seven".