25555278002755 has 4 divisors (see below), whose sum is σ = 30666333603312. Its totient is φ = 20444222402200.

The previous prime is 25555278002719. The next prime is 25555278002759. The reversal of 25555278002755 is 55720087255552.

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

It is not a de Polignac number, because 25555278002755 - 2⁷ = 25555278002627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25555278002755.

It is not an unprimeable number, because it can be changed into a prime (25555278002759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555527800271 + ... + 2555527800280.

It is an arithmetic number, because the mean of its divisors is an integer number (7666583400828).

Almost surely, 2^{25555278002755} is an apocalyptic number.

25555278002755 is a deficient number, since it is larger than the sum of its proper divisors (5111055600557).

25555278002755 is an equidigital number, since it uses as much as digits as its factorization.

25555278002755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111055600556.

The product of its (nonzero) digits is 49000000, while the sum is 58.

The spelling of 25555278002755 in words is "twenty-five trillion, five hundred fifty-five billion, two hundred seventy-eight million, two thousand, seven hundred fifty-five".