25920003 has 4 divisors (see below), whose sum is σ = 34560008. Its totient is φ = 17280000.

The previous prime is 25919977. The next prime is 25920007. The reversal of 25920003 is 30002952.

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

It is not a de Polignac number, because 25920003 - 2¹³ = 25911811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25920007) 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, 4319998 + ... + 4320003.

It is an arithmetic number, because the mean of its divisors is an integer number (8640002).

Almost surely, 2^25920003 is an apocalyptic number.

25920003 is a deficient number, since it is larger than the sum of its proper divisors (8640005).

25920003 is an equidigital number, since it uses as much as digits as its factorization.

25920003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640004.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 25920003 is about 5091.1691191710. The cubic root of 25920003 is about 295.9454603373.

Adding to 25920003 its reverse (30002952), we get a palindrome (55922955).

The spelling of 25920003 in words is "twenty-five million, nine hundred twenty thousand, three".