25284672 has 84 divisors (see below), whose sum is σ = 82840576. Its totient is φ = 7223040.

The previous prime is 25284647. The next prime is 25284673. The reversal of 25284672 is 27648252.

It is a tau number, because it is divible by the number of its divisors (84).

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

It is not an unprimeable number, because it can be changed into a prime (25284673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897 + ... + 7167.

Almost surely, 2^25284672 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 25284672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41420288).

25284672 is an abundant number, since it is smaller than the sum of its proper divisors (57555904).

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

25284672 is a wasteful number, since it uses less digits than its factorization.

25284672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296 (or 6283 counting only the distinct ones).

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

The square root of 25284672 is about 5028.3866199806. The cubic root of 25284672 is about 293.5074356711.

The spelling of 25284672 in words is "twenty-five million, two hundred eighty-four thousand, six hundred seventy-two".