25788403 has 4 divisors (see below), whose sum is σ = 25814448. Its totient is φ = 25762360.

The previous prime is 25788397. The next prime is 25788437. The reversal of 25788403 is 30488752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25788403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25788443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11476 + ... + 13537.

It is an arithmetic number, because the mean of its divisors is an integer number (6453612).

Almost surely, 2^25788403 is an apocalyptic number.

25788403 is a deficient number, since it is larger than the sum of its proper divisors (26045).

25788403 is a wasteful number, since it uses less digits than its factorization.

25788403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26044.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 25788403 is about 5078.2283327948. The cubic root of 25788403 is about 295.4437561576.

The spelling of 25788403 in words is "twenty-five million, seven hundred eighty-eight thousand, four hundred three".