25424045 has 4 divisors (see below), whose sum is σ = 30508860. Its totient is φ = 20339232.

The previous prime is 25424029. The next prime is 25424057. The reversal of 25424045 is 54042452.

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 15507844 + 9916201 = 3938^2 + 3149^2 .

It is a cyclic number.

It is not a de Polignac number, because 25424045 - 2⁴ = 25424029 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 2542400 + ... + 2542409.

It is an arithmetic number, because the mean of its divisors is an integer number (7627215).

Almost surely, 2^25424045 is an apocalyptic number.

It is an amenable number.

25424045 is a deficient number, since it is larger than the sum of its proper divisors (5084815).

25424045 is an equidigital number, since it uses as much as digits as its factorization.

25424045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084814.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 25424045 is about 5042.2261948469. The cubic root of 25424045 is about 294.0457338575.

Adding to 25424045 its reverse (54042452), we get a palindrome (79466497).

The spelling of 25424045 in words is "twenty-five million, four hundred twenty-four thousand, forty-five".