25239673 has 4 divisors (see below), whose sum is σ = 26053888. Its totient is φ = 24425460.

The previous prime is 25239659. The next prime is 25239703. The reversal of 25239673 is 37693252.

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 25239673 - 2⁹ = 25239161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25239623) 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, 407061 + ... + 407122.

It is an arithmetic number, because the mean of its divisors is an integer number (6513472).

Almost surely, 2^25239673 is an apocalyptic number.

It is an amenable number.

25239673 is a deficient number, since it is larger than the sum of its proper divisors (814215).

25239673 is an equidigital number, since it uses as much as digits as its factorization.

25239673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814214.

The product of its digits is 68040, while the sum is 37.

The square root of 25239673 is about 5023.9101305656. The cubic root of 25239673 is about 293.3332143882. Note that the first 3 decimals are identical.

The spelling of 25239673 in words is "twenty-five million, two hundred thirty-nine thousand, six hundred seventy-three".