25755307553 has 4 divisors (see below), whose sum is σ = 26383485828. Its totient is φ = 25127129280.

The previous prime is 25755307493. The next prime is 25755307561. The reversal of 25755307553 is 35570355752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3426580369 + 22328727184 = 58537^2 + 149428^2 .

It is a cyclic number.

It is not a de Polignac number, because 25755307553 - 2¹⁰ = 25755306529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25755307498 and 25755307507.

It is not an unprimeable number, because it can be changed into a prime (25755307573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314089076 + ... + 314089157.

It is an arithmetic number, because the mean of its divisors is an integer number (6595871457).

Almost surely, 2^25755307553 is an apocalyptic number.

It is an amenable number.

25755307553 is a deficient number, since it is larger than the sum of its proper divisors (628178275).

25755307553 is an equidigital number, since it uses as much as digits as its factorization.

25755307553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628178274.

The product of its (nonzero) digits is 2756250, while the sum is 47.

The spelling of 25755307553 in words is "twenty-five billion, seven hundred fifty-five million, three hundred seven thousand, five hundred fifty-three".