25280550055 has 4 divisors (see below), whose sum is σ = 30336660072. Its totient is φ = 20224440040.

The previous prime is 25280550049. The next prime is 25280550089. The reversal of 25280550055 is 55005508252.

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

It is not a de Polignac number, because 25280550055 - 2¹³ = 25280541863 is a prime.

It is a super-2 number, since 2×25280550055² (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 = 25280549996 and 25280550023.

It is a congruent number.

It is an unprimeable number.

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, 2528055001 + ... + 2528055010.

It is an arithmetic number, because the mean of its divisors is an integer number (7584165018).

Almost surely, 2^25280550055 is an apocalyptic number.

25280550055 is a deficient number, since it is larger than the sum of its proper divisors (5056110017).

25280550055 is an equidigital number, since it uses as much as digits as its factorization.

25280550055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5056110016.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 25280550055 in words is "twenty-five billion, two hundred eighty million, five hundred fifty thousand, fifty-five".