25299968 has 44 divisors (see below), whose sum is σ = 52272192. Its totient is φ = 12226560.

The previous prime is 25299949. The next prime is 25299979. The reversal of 25299968 is 86999252.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31346 + ... + 32142.

Almost surely, 2^25299968 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 25299968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26136096).

25299968 is an abundant number, since it is smaller than the sum of its proper divisors (26972224).

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

25299968 is an equidigital number, since it uses as much as digits as its factorization.

25299968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848 (or 830 counting only the distinct ones).

The product of its digits is 699840, while the sum is 50.

The square root of 25299968 is about 5029.9073550116. The cubic root of 25299968 is about 293.5666096604.

The spelling of 25299968 in words is "twenty-five million, two hundred ninety-nine thousand, nine hundred sixty-eight".