25667968 has 64 divisors (see below), whose sum is σ = 53892720. Its totient is φ = 12165120.

The previous prime is 25667933. The next prime is 25667989. The reversal of 25667968 is 86976652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 351580 + ... + 351652.

Almost surely, 2^25667968 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 25667968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26946360).

25667968 is an abundant number, since it is smaller than the sum of its proper divisors (28224752).

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

25667968 is an equidigital number, since it uses as much as digits as its factorization.

25667968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 183 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 25667968 is about 5066.3564817332. The cubic root of 25667968 is about 294.9831188272.

The spelling of 25667968 in words is "twenty-five million, six hundred sixty-seven thousand, nine hundred sixty-eight".