25081873 has 4 divisors (see below), whose sum is σ = 25693668. Its totient is φ = 24470080.

The previous prime is 25081871. The next prime is 25081907. The reversal of 25081873 is 37818052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9778129 + 15303744 = 3127^2 + 3912^2 .

It is a cyclic number.

It is not a de Polignac number, because 25081873 - 2¹ = 25081871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25081871) 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, 305836 + ... + 305917.

It is an arithmetic number, because the mean of its divisors is an integer number (6423417).

Almost surely, 2^25081873 is an apocalyptic number.

It is an amenable number.

25081873 is a deficient number, since it is larger than the sum of its proper divisors (611795).

25081873 is an equidigital number, since it uses as much as digits as its factorization.

25081873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611794.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 25081873 is about 5008.1806077657. The cubic root of 25081873 is about 292.7206234775.

The spelling of 25081873 in words is "twenty-five million, eighty-one thousand, eight hundred seventy-three".