25782016 has 72 divisors (see below), whose sum is σ = 56774144. Its totient is φ = 11612160.

The previous prime is 25781999. The next prime is 25782019. The reversal of 25782016 is 61028752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25782019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202945 + ... + 203071.

Almost surely, 2^25782016 is an apocalyptic number.

25782016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25782016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28387072).

25782016 is an abundant number, since it is smaller than the sum of its proper divisors (30992128).

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

25782016 is a wasteful number, since it uses less digits than its factorization.

25782016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 25782016 is about 5077.5994328029. The cubic root of 25782016 is about 295.4193633446.

The spelling of 25782016 in words is "twenty-five million, seven hundred eighty-two thousand, sixteen".