25788431 has 8 divisors (see below), whose sum is σ = 26159328. Its totient is φ = 25420000.

The previous prime is 25788397. The next prime is 25788437. The reversal of 25788431 is 13488752.

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 25788431 - 2¹⁸ = 25526287 is a prime.

It is a super-2 number, since 2×25788431² = 1330086346883522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25788437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31001 + ... + 31821.

It is an arithmetic number, because the mean of its divisors is an integer number (3269916).

Almost surely, 2^25788431 is an apocalyptic number.

25788431 is a deficient number, since it is larger than the sum of its proper divisors (370897).

25788431 is a wasteful number, since it uses less digits than its factorization.

25788431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233.

The product of its digits is 53760, while the sum is 38.

The square root of 25788431 is about 5078.2310896610. The cubic root of 25788431 is about 295.4438630845.

It can be divided in two parts, 257 and 88431, that added together give a palindrome (88688).

The spelling of 25788431 in words is "twenty-five million, seven hundred eighty-eight thousand, four hundred thirty-one".