25791456 has 24 divisors (see below), whose sum is σ = 67702824. Its totient is φ = 8597120.

The previous prime is 25791439. The next prime is 25791463. The reversal of 25791456 is 65419752.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

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, 134235 + ... + 134426.

It is an arithmetic number, because the mean of its divisors is an integer number (2820951).

Almost surely, 2^25791456 is an apocalyptic number.

It is an amenable number.

25791456 is an abundant number, since it is smaller than the sum of its proper divisors (41911368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25791456 is a wasteful number, since it uses less digits than its factorization.

25791456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268674 (or 268666 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 25791456 is about 5078.5289208589. The cubic root of 25791456 is about 295.4554145529.

The spelling of 25791456 in words is "twenty-five million, seven hundred ninety-one thousand, four hundred fifty-six".