25864873 has 4 divisors (see below), whose sum is σ = 25937280. Its totient is φ = 25792468.

The previous prime is 25864859. The next prime is 25864921. The reversal of 25864873 is 37846852.

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 25864873 - 2⁵ = 25864841 is a prime.

It is a super-2 number, since 2×25864873² = 1337983310612258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25864823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35665 + ... + 36382.

It is an arithmetic number, because the mean of its divisors is an integer number (6484320).

Almost surely, 2^25864873 is an apocalyptic number.

It is an amenable number.

25864873 is a deficient number, since it is larger than the sum of its proper divisors (72407).

25864873 is an equidigital number, since it uses as much as digits as its factorization.

25864873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72406.

The product of its digits is 322560, while the sum is 43.

The square root of 25864873 is about 5085.7519601333. The cubic root of 25864873 is about 295.7354931008.

It can be divided in two parts, 2 and 5864873, that multiplied together give a triangular number (11729746 = T₄₈₄₃).

The spelling of 25864873 in words is "twenty-five million, eight hundred sixty-four thousand, eight hundred seventy-three".