25997608 has 96 divisors (see below), whose sum is σ = 62717760. Its totient is φ = 9884160.

The previous prime is 25997599. The next prime is 25997611. The reversal of 25997608 is 80679952.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387991 + ... + 388057.

It is an arithmetic number, because the mean of its divisors is an integer number (653310).

Almost surely, 2^25997608 is an apocalyptic number.

25997608 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 25997608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31358880).

25997608 is an abundant number, since it is smaller than the sum of its proper divisors (36720152).

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

25997608 is a wasteful number, since it uses less digits than its factorization.

25997608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 25997608 is about 5098.7849533001. The cubic root of 25997608 is about 296.2405215742.

The spelling of 25997608 in words is "twenty-five million, nine hundred ninety-seven thousand, six hundred eight".