25757500553 has 2 divisors, whose sum is σ = 25757500554. Its totient is φ = 25757500552.

The previous prime is 25757500507. The next prime is 25757500589. The reversal of 25757500553 is 35500575752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14914027129 + 10843473424 = 122123^2 + 104132^2 .

It is a cyclic number.

It is not a de Polignac number, because 25757500553 - 2²⁰ = 25756451977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25757530553) 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, 12878750276 + 12878750277.

It is an arithmetic number, because the mean of its divisors is an integer number (12878750277).

Almost surely, 2^25757500553 is an apocalyptic number.

It is an amenable number.

25757500553 is a deficient number, since it is larger than the sum of its proper divisors (1).

25757500553 is an equidigital number, since it uses as much as digits as its factorization.

25757500553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 918750, while the sum is 44.

The spelling of 25757500553 in words is "twenty-five billion, seven hundred fifty-seven million, five hundred thousand, five hundred fifty-three".