25995321 has 24 divisors (see below), whose sum is σ = 41399904. Its totient is φ = 15586560.

The previous prime is 25995289. The next prime is 25995331. The reversal of 25995321 is 12359952.

It is a happy number.

It is not a de Polignac number, because 25995321 - 2⁵ = 25995289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25995331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8250 + ... + 10956.

It is an arithmetic number, because the mean of its divisors is an integer number (1724996).

Almost surely, 2^25995321 is an apocalyptic number.

It is an amenable number.

25995321 is a deficient number, since it is larger than the sum of its proper divisors (15404583).

25995321 is a wasteful number, since it uses less digits than its factorization.

25995321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2818 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 25995321 is about 5098.5606792506. The cubic root of 25995321 is about 296.2318345962.

The spelling of 25995321 in words is "twenty-five million, nine hundred ninety-five thousand, three hundred twenty-one".