25651648 has 56 divisors (see below), whose sum is σ = 56327040. Its totient is φ = 11493120.

The previous prime is 25651603. The next prime is 25651651. The reversal of 25651648 is 84615652.

It is a congruent number.

It is an unprimeable number.

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, 58213 + ... + 58651.

It is an arithmetic number, because the mean of its divisors is an integer number (1005840).

Almost surely, 2^25651648 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 25651648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28163520).

25651648 is an abundant number, since it is smaller than the sum of its proper divisors (30675392).

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

25651648 is a wasteful number, since it uses less digits than its factorization.

25651648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 535 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 25651648 is about 5064.7456007188. The cubic root of 25651648 is about 294.9205876450.

The spelling of 25651648 in words is "twenty-five million, six hundred fifty-one thousand, six hundred forty-eight".