25996691 has 8 divisors (see below), whose sum is σ = 29745504. Its totient is φ = 22256640.

The previous prime is 25996669. The next prime is 25996699. The reversal of 25996691 is 19669952.

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

It is not a de Polignac number, because 25996691 - 2¹⁴ = 25980307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25996699) 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, 6461 + ... + 9681.

It is an arithmetic number, because the mean of its divisors is an integer number (3718188).

Almost surely, 2^25996691 is an apocalyptic number.

25996691 is a deficient number, since it is larger than the sum of its proper divisors (3748813).

25996691 is a wasteful number, since it uses less digits than its factorization.

25996691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381.

The product of its digits is 262440, while the sum is 47.

The square root of 25996691 is about 5098.6950291226. The cubic root of 25996691 is about 296.2370384877.

The spelling of 25996691 in words is "twenty-five million, nine hundred ninety-six thousand, six hundred ninety-one".