25320873 has 4 divisors (see below), whose sum is σ = 33761168. Its totient is φ = 16880580.

The previous prime is 25320829. The next prime is 25320877. The reversal of 25320873 is 37802352.

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 not a de Polignac number, because 25320873 - 2¹² = 25316777 is a prime.

It is a super-2 number, since 2×25320873² = 1282293218964258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25320873.

It is not an unprimeable number, because it can be changed into a prime (25320877) 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, 4220143 + ... + 4220148.

It is an arithmetic number, because the mean of its divisors is an integer number (8440292).

Almost surely, 2^25320873 is an apocalyptic number.

It is an amenable number.

25320873 is a deficient number, since it is larger than the sum of its proper divisors (8440295).

25320873 is an equidigital number, since it uses as much as digits as its factorization.

25320873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440294.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 25320873 is about 5031.9849960031. The cubic root of 25320873 is about 293.6474440241.

The spelling of 25320873 in words is "twenty-five million, three hundred twenty thousand, eight hundred seventy-three".