25550868 has 48 divisors (see below), whose sum is σ = 69985664. Its totient is φ = 7102080.

The previous prime is 25550857. The next prime is 25550923. The reversal of 25550868 is 86805552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003 + ... + 7218.

Almost surely, 2^25550868 is an apocalyptic number.

25550868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25550868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34992832).

25550868 is an abundant number, since it is smaller than the sum of its proper divisors (44434796).

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

25550868 is a wasteful number, since it uses less digits than its factorization.

25550868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272 (or 8270 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 25550868 is about 5054.7866423817. The cubic root of 25550868 is about 294.5338534803.

The spelling of 25550868 in words is "twenty-five million, five hundred fifty thousand, eight hundred sixty-eight".