25553361055 has 4 divisors (see below), whose sum is σ = 30664033272. Its totient is φ = 20442688840.

The previous prime is 25553361047. The next prime is 25553361133. The reversal of 25553361055 is 55016335552.

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

It is not a de Polignac number, because 25553361055 - 2³ = 25553361047 is a prime.

It is a super-2 number, since 2×25553361055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25553360999 and 25553361017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555336101 + ... + 2555336110.

It is an arithmetic number, because the mean of its divisors is an integer number (7666008318).

Almost surely, 2^25553361055 is an apocalyptic number.

25553361055 is a deficient number, since it is larger than the sum of its proper divisors (5110672217).

25553361055 is an equidigital number, since it uses as much as digits as its factorization.

25553361055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110672216.

The product of its (nonzero) digits is 337500, while the sum is 40.

The spelling of 25553361055 in words is "twenty-five billion, five hundred fifty-three million, three hundred sixty-one thousand, fifty-five".