25435648 has 80 divisors (see below), whose sum is σ = 59710464. Its totient is φ = 10598400.

The previous prime is 25435633. The next prime is 25435649. The reversal of 25435648 is 84653452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25435649) 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 7 ways as a sum of consecutive naturals, for example, 168373 + ... + 168523.

Almost surely, 2^25435648 is an apocalyptic number.

25435648 is a gapful number since it is divisible by the number (28) 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 25435648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29855232).

25435648 is an abundant number, since it is smaller than the sum of its proper divisors (34274816).

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

25435648 is an equidigital number, since it uses as much as digits as its factorization.

25435648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 207 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 25435648 is about 5043.3766466525. The cubic root of 25435648 is about 294.0904591527.

The spelling of 25435648 in words is "twenty-five million, four hundred thirty-five thousand, six hundred forty-eight".