25858973 has 4 divisors (see below), whose sum is σ = 29553120. Its totient is φ = 22164828.

The previous prime is 25858961. The next prime is 25858979. The reversal of 25858973 is 37985852.

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 25858973 - 2⁴ = 25858957 is a prime.

It is a super-2 number, since 2×25858973² = 1337372969229458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25858979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847063 + ... + 1847076.

It is an arithmetic number, because the mean of its divisors is an integer number (7388280).

Almost surely, 2^25858973 is an apocalyptic number.

It is an amenable number.

25858973 is a deficient number, since it is larger than the sum of its proper divisors (3694147).

25858973 is an equidigital number, since it uses as much as digits as its factorization.

25858973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3694146.

The product of its digits is 604800, while the sum is 47.

The square root of 25858973 is about 5085.1718751680. The cubic root of 25858973 is about 295.7130047876.

The spelling of 25858973 in words is "twenty-five million, eight hundred fifty-eight thousand, nine hundred seventy-three".