25525275553 has 4 divisors (see below), whose sum is σ = 25525670080. Its totient is φ = 25524881028.

The previous prime is 25525275541. The next prime is 25525275613. The reversal of 25525275553 is 35557252552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25525275553 - 2⁵ = 25525275521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25525275653) 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, 74925 + ... + 238042.

It is an arithmetic number, because the mean of its divisors is an integer number (6381417520).

Almost surely, 2^25525275553 is an apocalyptic number.

It is an amenable number.

25525275553 is a deficient number, since it is larger than the sum of its proper divisors (394527).

25525275553 is an equidigital number, since it uses as much as digits as its factorization.

25525275553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394526.

The product of its digits is 2625000, while the sum is 46.

The spelling of 25525275553 in words is "twenty-five billion, five hundred twenty-five million, two hundred seventy-five thousand, five hundred fifty-three".