25991383 has 8 divisors (see below), whose sum is σ = 28478736. Its totient is φ = 23524800.

The previous prime is 25991363. The next prime is 25991387. The reversal of 25991383 is 38319952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25991383 - 2⁹ = 25990871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25991387) 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 7 ways as a sum of consecutive naturals, for example, 2508 + ... + 7633.

It is an arithmetic number, because the mean of its divisors is an integer number (3559842).

Almost surely, 2^25991383 is an apocalyptic number.

25991383 is a deficient number, since it is larger than the sum of its proper divisors (2487353).

25991383 is a wasteful number, since it uses less digits than its factorization.

25991383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385.

The product of its digits is 58320, while the sum is 40.

The square root of 25991383 is about 5098.1744772026. The cubic root of 25991383 is about 296.2168752391.

The spelling of 25991383 in words is "twenty-five million, nine hundred ninety-one thousand, three hundred eighty-three".