25784946 has 64 divisors (see below), whose sum is σ = 63383040. Its totient is φ = 7704720.

The previous prime is 25784929. The next prime is 25784951. The reversal of 25784946 is 64948752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49041 + ... + 49563.

It is an arithmetic number, because the mean of its divisors is an integer number (990360).

Almost surely, 2^25784946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25784946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31691520).

25784946 is an abundant number, since it is smaller than the sum of its proper divisors (37598094).

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

25784946 is a wasteful number, since it uses less digits than its factorization.

25784946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 622 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 25784946 is about 5077.8879467747. The cubic root of 25784946 is about 295.4305539092.

The spelling of 25784946 in words is "twenty-five million, seven hundred eighty-four thousand, nine hundred forty-six".