25316603 has 4 divisors (see below), whose sum is σ = 27264048. Its totient is φ = 23369160.

The previous prime is 25316579. The next prime is 25316617. The reversal of 25316603 is 30661352.

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 25316603 - 2¹⁸ = 25054459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25316693) 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, 973703 + ... + 973728.

It is an arithmetic number, because the mean of its divisors is an integer number (6816012).

Almost surely, 2^25316603 is an apocalyptic number.

25316603 is a deficient number, since it is larger than the sum of its proper divisors (1947445).

25316603 is a wasteful number, since it uses less digits than its factorization.

25316603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947444.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 25316603 is about 5031.5606922703. The cubic root of 25316603 is about 293.6309366275.

Adding to 25316603 its reverse (30661352), we get a palindrome (55977955).

The spelling of 25316603 in words is "twenty-five million, three hundred sixteen thousand, six hundred three".