25804973 has 4 divisors (see below), whose sum is σ = 25873440. Its totient is φ = 25736508.

The previous prime is 25804969. The next prime is 25804981. The reversal of 25804973 is 37940852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25804973 - 2² = 25804969 is a prime.

It is a super-3 number, since 3×25804973³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25804903) 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 3 ways as a sum of consecutive naturals, for example, 33665 + ... + 34422.

It is an arithmetic number, because the mean of its divisors is an integer number (6468360).

Almost surely, 2^25804973 is an apocalyptic number.

It is an amenable number.

25804973 is a deficient number, since it is larger than the sum of its proper divisors (68467).

25804973 is an equidigital number, since it uses as much as digits as its factorization.

25804973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68466.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 25804973 is about 5079.8595453024. The cubic root of 25804973 is about 295.5070204460.

The spelling of 25804973 in words is "twenty-five million, eight hundred four thousand, nine hundred seventy-three".