25942784 has 72 divisors (see below), whose sum is σ = 61221888. Its totient is φ = 10736640.

The previous prime is 25942783. The next prime is 25942817. The reversal of 25942784 is 48724952.

It is a super-3 number, since 3×25942784³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25942783) 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 in 7 ways as a sum of consecutive naturals, for example, 55319 + ... + 55785.

It is an arithmetic number, because the mean of its divisors is an integer number (850304).

Almost surely, 2^25942784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25942784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30610944).

25942784 is an abundant number, since it is smaller than the sum of its proper divisors (35279104).

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

25942784 is an equidigital number, since it uses as much as digits as its factorization.

25942784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 507 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 25942784 is about 5093.4059331650. The cubic root of 25942784 is about 296.0321367591.

The spelling of 25942784 in words is "twenty-five million, nine hundred forty-two thousand, seven hundred eighty-four".