25981792 has 12 divisors (see below), whose sum is σ = 51151716. Its totient is φ = 12990880.

The previous prime is 25981783. The next prime is 25981793. The reversal of 25981792 is 29718952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25981793) 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 as a sum of consecutive naturals, namely, 405934 + ... + 405997.

It is an arithmetic number, because the mean of its divisors is an integer number (4262643).

Almost surely, 2^25981792 is an apocalyptic number.

It is an amenable number.

25981792 is a deficient number, since it is larger than the sum of its proper divisors (25169924).

25981792 is an equidigital number, since it uses as much as digits as its factorization.

25981792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811941 (or 811933 counting only the distinct ones).

The product of its digits is 90720, while the sum is 43.

The square root of 25981792 is about 5097.2337595994. The cubic root of 25981792 is about 296.1804353983.

The spelling of 25981792 in words is "twenty-five million, nine hundred eighty-one thousand, seven hundred ninety-two".