25989456 has 20 divisors (see below), whose sum is σ = 67139552. Its totient is φ = 8663136.

The previous prime is 25989443. The next prime is 25989463. The reversal of 25989456 is 65498952.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 541447 = 25989456 / (2 + 5 + 9 + 8 + 9 + 4 + 5 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270676 + ... + 270771.

Almost surely, 2^25989456 is an apocalyptic number.

It is an amenable number.

25989456 is an abundant number, since it is smaller than the sum of its proper divisors (41150096).

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

25989456 is a wasteful number, since it uses less digits than its factorization.

25989456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541458 (or 541452 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 25989456 is about 5097.9854844831. The cubic root of 25989456 is about 296.2095545561.

The spelling of 25989456 in words is "twenty-five million, nine hundred eighty-nine thousand, four hundred fifty-six".