25555003 has 4 divisors (see below), whose sum is σ = 26436240. Its totient is φ = 24673768.

The previous prime is 25554989. The next prime is 25555007. The reversal of 25555003 is 30055552.

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

It is a cyclic number.

It is not a de Polignac number, because 25555003 - 2⁹ = 25554491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25555007) 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 3 ways as a sum of consecutive naturals, for example, 440575 + ... + 440632.

It is an arithmetic number, because the mean of its divisors is an integer number (6609060).

Almost surely, 2^25555003 is an apocalyptic number.

25555003 is a deficient number, since it is larger than the sum of its proper divisors (881237).

25555003 is an equidigital number, since it uses as much as digits as its factorization.

25555003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881236.

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 25555003 is about 5055.1956440874. The cubic root of 25555003 is about 294.5497411570.

The spelling of 25555003 in words is "twenty-five million, five hundred fifty-five thousand, three".