25999872 has 40 divisors (see below), whose sum is σ = 69269376. Its totient is φ = 8666112.

The previous prime is 25999871. The next prime is 25999877. The reversal of 25999872 is 27899952.

It is not an unprimeable number, because it can be changed into a prime (25999871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6928 + ... + 9999.

Almost surely, 2^25999872 is an apocalyptic number.

It is an amenable number.

25999872 is an abundant number, since it is smaller than the sum of its proper divisors (43269504).

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

25999872 is an equidigital number, since it uses as much as digits as its factorization.

25999872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16948 (or 16932 counting only the distinct ones).

The product of its digits is 816480, while the sum is 51.

The square root of 25999872 is about 5099.0069621447. The cubic root of 25999872 is about 296.2491206867.

The spelling of 25999872 in words is "twenty-five million, nine hundred ninety-nine thousand, eight hundred seventy-two".