25905408 has 72 divisors (see below), whose sum is σ = 69904800. Its totient is φ = 8515584.

The previous prime is 25905403. The next prime is 25905431. The reversal of 25905408 is 80450952.

It is not an unprimeable number, because it can be changed into a prime (25905401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68163 + ... + 68541.

It is an arithmetic number, because the mean of its divisors is an integer number (970900).

Almost surely, 2^25905408 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 25905408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34952400).

25905408 is an abundant number, since it is smaller than the sum of its proper divisors (43999392).

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

25905408 is an equidigital number, since it uses as much as digits as its factorization.

25905408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 25905408 is about 5089.7355530518. The cubic root of 25905408 is about 295.8899030527.

The spelling of 25905408 in words is "twenty-five million, nine hundred five thousand, four hundred eight".