25330145 has 4 divisors (see below), whose sum is σ = 30396180. Its totient is φ = 20264112.

The previous prime is 25330127. The next prime is 25330147. The reversal of 25330145 is 54103352.

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 15147664 + 10182481 = 3892^2 + 3191^2 .

It is a cyclic number.

It is not a de Polignac number, because 25330145 - 2¹⁰ = 25329121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25330145.

It is not an unprimeable number, because it can be changed into a prime (25330147) 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, 2533010 + ... + 2533019.

It is an arithmetic number, because the mean of its divisors is an integer number (7599045).

Almost surely, 2^25330145 is an apocalyptic number.

It is an amenable number.

25330145 is a deficient number, since it is larger than the sum of its proper divisors (5066035).

25330145 is an equidigital number, since it uses as much as digits as its factorization.

25330145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5066034.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 25330145 is about 5032.9062180812. The cubic root of 25330145 is about 293.6832822676.

Adding to 25330145 its reverse (54103352), we get a palindrome (79433497).

The spelling of 25330145 in words is "twenty-five million, three hundred thirty thousand, one hundred forty-five".