25865973 has 60 divisors (see below), whose sum is σ = 47451360. Its totient is φ = 14002632.

The previous prime is 25865951. The next prime is 25866019. The reversal of 25865973 is 37956852.

It is a happy number.

25865973 is a `hidden beast` number, since 2 + 58 + 6 + 597 + 3 = 666.

It is not a de Polignac number, because 25865973 - 2⁸ = 25865717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25865173) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1361358 + ... + 1361376.

It is an arithmetic number, because the mean of its divisors is an integer number (790856).

Almost surely, 2^25865973 is an apocalyptic number.

It is an amenable number.

25865973 is a deficient number, since it is larger than the sum of its proper divisors (21585387).

25865973 is an frugal number, since it uses more digits than its factorization.

25865973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66 (or 29 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 25865973 is about 5085.8601042498. The cubic root of 25865973 is about 295.7396854589.

The spelling of 25865973 in words is "twenty-five million, eight hundred sixty-five thousand, nine hundred seventy-three".