25550272266 has 8 divisors (see below), whose sum is σ = 51100544544. Its totient is φ = 8516757420.

The previous prime is 25550272157. The next prime is 25550272271. The reversal of 25550272266 is 66227205552.

It is a sphenic number, since it is the product of 3 distinct primes.

25550272266 is an admirable number.

It is a Curzon 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, 2129189350 + ... + 2129189361.

It is an arithmetic number, because the mean of its divisors is an integer number (6387568068).

Almost surely, 2^25550272266 is an apocalyptic number.

25550272266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25550272266 is a wasteful number, since it uses less digits than its factorization.

25550272266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258378716.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 25550272266 in words is "twenty-five billion, five hundred fifty million, two hundred seventy-two thousand, two hundred sixty-six".