25216003 has 4 divisors (see below), whose sum is σ = 25273368. Its totient is φ = 25158640.

The previous prime is 25216001. The next prime is 25216019. The reversal of 25216003 is 30061252.

It is a happy number.

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 25216003 - 2¹ = 25216001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25216001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28018 + ... + 28903.

It is an arithmetic number, because the mean of its divisors is an integer number (6318342).

Almost surely, 2^25216003 is an apocalyptic number.

25216003 is a deficient number, since it is larger than the sum of its proper divisors (57365).

25216003 is an equidigital number, since it uses as much as digits as its factorization.

25216003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57364.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 25216003 is about 5021.5538431844. The cubic root of 25216003 is about 293.2414888366.

Adding to 25216003 its reverse (30061252), we get a palindrome (55277255).

The spelling of 25216003 in words is "twenty-five million, two hundred sixteen thousand, three".