25691327 has 4 divisors (see below), whose sum is σ = 25887576. Its totient is φ = 25495080.

The previous prime is 25691317. The next prime is 25691377. The reversal of 25691327 is 72319652.

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

It is a cyclic number.

It is not a de Polignac number, because 25691327 - 2¹² = 25687231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25691317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97928 + ... + 98189.

It is an arithmetic number, because the mean of its divisors is an integer number (6471894).

Almost surely, 2^25691327 is an apocalyptic number.

25691327 is a deficient number, since it is larger than the sum of its proper divisors (196249).

25691327 is a wasteful number, since it uses less digits than its factorization.

25691327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196248.

The product of its digits is 22680, while the sum is 35.

The square root of 25691327 is about 5068.6612630950. The cubic root of 25691327 is about 295.0725743112.

The spelling of 25691327 in words is "twenty-five million, six hundred ninety-one thousand, three hundred twenty-seven".