25800973 has 4 divisors (see below), whose sum is σ = 28146528. Its totient is φ = 23455420.

The previous prime is 25800961. The next prime is 25800991. The reversal of 25800973 is 37900852.

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 25800973 - 2⁵ = 25800941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25800913) 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, 1172761 + ... + 1172782.

It is an arithmetic number, because the mean of its divisors is an integer number (7036632).

Almost surely, 2^25800973 is an apocalyptic number.

It is an amenable number.

25800973 is a deficient number, since it is larger than the sum of its proper divisors (2345555).

25800973 is a wasteful number, since it uses less digits than its factorization.

25800973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345554.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 25800973 is about 5079.4658183711. The cubic root of 25800973 is about 295.4917509195.

The spelling of 25800973 in words is "twenty-five million, eight hundred thousand, nine hundred seventy-three".