25397968 has 40 divisors (see below), whose sum is σ = 51425280. Its totient is φ = 12136320.

The previous prime is 25397951. The next prime is 25397987. The reversal of 25397968 is 86979352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58713 + ... + 59143.

It is an arithmetic number, because the mean of its divisors is an integer number (1285632).

Almost surely, 2^25397968 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 25397968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25712640).

25397968 is an abundant number, since it is smaller than the sum of its proper divisors (26027312).

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

25397968 is a wasteful number, since it uses less digits than its factorization.

25397968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 589 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 25397968 is about 5039.6396696589. The cubic root of 25397968 is about 293.9451669377.

The spelling of 25397968 in words is "twenty-five million, three hundred ninety-seven thousand, nine hundred sixty-eight".