25784064 has 162 divisors, whose sum is σ = 80991456. Its totient is φ = 7879680.

The previous prime is 25784051. The next prime is 25784069. The reversal of 25784064 is 46048752.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25784069) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 831729 + ... + 831759.

Almost surely, 2^25784064 is an apocalyptic number.

25784064 is a gapful number since it is divisible by the number (24) 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 25784064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40495728).

25784064 is an abundant number, since it is smaller than the sum of its proper divisors (55207392).

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

25784064 is a wasteful number, since it uses less digits than its factorization.

25784064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 25784064 is about 5077.8010989010. The cubic root of 25784064 is about 295.4271853711.

The spelling of 25784064 in words is "twenty-five million, seven hundred eighty-four thousand, sixty-four".