25648524 has 72 divisors (see below), whose sum is σ = 71285760. Its totient is φ = 7711200.

The previous prime is 25648523. The next prime is 25648531. The reversal of 25648524 is 42584652.

It is a happy number.

25648524 is a `hidden beast` number, since 2 + 5 + 648 + 5 + 2 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25648523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94509 + ... + 94779.

It is an arithmetic number, because the mean of its divisors is an integer number (990080).

Almost surely, 2^25648524 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 25648524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35642880).

25648524 is an abundant number, since it is smaller than the sum of its proper divisors (45637236).

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

25648524 is a wasteful number, since it uses less digits than its factorization.

25648524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 526 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 25648524 is about 5064.4371849200. The cubic root of 25648524 is about 294.9086148038.

The spelling of 25648524 in words is "twenty-five million, six hundred forty-eight thousand, five hundred twenty-four".