25554563 has 8 divisors (see below), whose sum is σ = 27107520. Its totient is φ = 24022440.

The previous prime is 25554517. The next prime is 25554569. The reversal of 25554563 is 36545552.

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

It is a cyclic number.

It is not a de Polignac number, because 25554563 - 2¹² = 25550467 is a prime.

It is a super-3 number, since 3×25554563³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25554569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2645 + ... + 7622.

It is an arithmetic number, because the mean of its divisors is an integer number (3388440).

Almost surely, 2^25554563 is an apocalyptic number.

25554563 is a deficient number, since it is larger than the sum of its proper divisors (1552957).

25554563 is a wasteful number, since it uses less digits than its factorization.

25554563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10417.

The product of its digits is 90000, while the sum is 35.

The square root of 25554563 is about 5055.1521243183. The cubic root of 25554563 is about 294.5480506513.

The spelling of 25554563 in words is "twenty-five million, five hundred fifty-four thousand, five hundred sixty-three".