25125845 has 8 divisors (see below), whose sum is σ = 30188376. Its totient is φ = 20075776.

The previous prime is 25125833. The next prime is 25125851. The reversal of 25125845 is 54852152.

It can be written as a sum of positive squares in 4 ways, for example, as 1874161 + 23251684 = 1369^2 + 4822^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25125845 - 2⁶ = 25125781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2129 + ... + 7401.

It is an arithmetic number, because the mean of its divisors is an integer number (3773547).

Almost surely, 2^25125845 is an apocalyptic number.

It is an amenable number.

25125845 is a deficient number, since it is larger than the sum of its proper divisors (5062531).

25125845 is an equidigital number, since it uses as much as digits as its factorization.

25125845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6231.

The product of its digits is 16000, while the sum is 32.

The square root of 25125845 is about 5012.5687027711. The cubic root of 25125845 is about 292.8915835533.

Adding to 25125845 its reverse (54852152), we get a palindrome (79977997).

The spelling of 25125845 in words is "twenty-five million, one hundred twenty-five thousand, eight hundred forty-five".