25603163 has 4 divisors (see below), whose sum is σ = 26716368. Its totient is φ = 24489960.

The previous prime is 25603157. The next prime is 25603169. The reversal of 25603163 is 36130652.

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

It is an interprime number because it is at equal distance from previous prime (25603157) and next prime (25603169).

It is a cyclic number.

It is not a de Polignac number, because 25603163 - 2¹⁴ = 25586779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25603169) 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, 556568 + ... + 556613.

It is an arithmetic number, because the mean of its divisors is an integer number (6679092).

Almost surely, 2^25603163 is an apocalyptic number.

25603163 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25603163 is a deficient number, since it is larger than the sum of its proper divisors (1113205).

25603163 is a wasteful number, since it uses less digits than its factorization.

25603163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113204.

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

The square root of 25603163 is about 5059.9568179976. The cubic root of 25603163 is about 294.7346575076.

The spelling of 25603163 in words is "twenty-five million, six hundred three thousand, one hundred sixty-three".