25820873 has 8 divisors (see below), whose sum is σ = 28263816. Its totient is φ = 23443200.

The previous prime is 25820777. The next prime is 25820887. The reversal of 25820873 is 37802852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 25775929 = 212^2 + 5077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25820873 - 2¹⁶ = 25755337 is a prime.

It is a super-3 number, since 3×25820873³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25820573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15488 + ... + 17073.

It is an arithmetic number, because the mean of its divisors is an integer number (3532977).

Almost surely, 2^25820873 is an apocalyptic number.

It is an amenable number.

25820873 is a deficient number, since it is larger than the sum of its proper divisors (2442943).

25820873 is a wasteful number, since it uses less digits than its factorization.

25820873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32635.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 25820873 is about 5081.4243082034. The cubic root of 25820873 is about 295.5677012165.

The spelling of 25820873 in words is "twenty-five million, eight hundred twenty thousand, eight hundred seventy-three".