25881393 has 8 divisors (see below), whose sum is σ = 34564768. Its totient is φ = 17226144.

The previous prime is 25881379. The next prime is 25881403. The reversal of 25881393 is 39318852.

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

It is not a de Polignac number, because 25881393 - 2⁴ = 25881377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25881593) 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, 4780 + ... + 8637.

It is an arithmetic number, because the mean of its divisors is an integer number (4320596).

Almost surely, 2^25881393 is an apocalyptic number.

It is an amenable number.

25881393 is a deficient number, since it is larger than the sum of its proper divisors (8683375).

25881393 is a wasteful number, since it uses less digits than its factorization.

25881393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14063.

The product of its digits is 51840, while the sum is 39.

The square root of 25881393 is about 5087.3758461509. The cubic root of 25881393 is about 295.7984421898.

The spelling of 25881393 in words is "twenty-five million, eight hundred eighty-one thousand, three hundred ninety-three".