25305541 has 2 divisors, whose sum is σ = 25305542. Its totient is φ = 25305540.

The previous prime is 25305529. The next prime is 25305557. The reversal of 25305541 is 14550352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20061441 + 5244100 = 4479^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 25305541 - 2⁵ = 25305509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25305941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652770 + 12652771.

It is an arithmetic number, because the mean of its divisors is an integer number (12652771).

Almost surely, 2^25305541 is an apocalyptic number.

It is an amenable number.

25305541 is a deficient number, since it is larger than the sum of its proper divisors (1).

25305541 is an equidigital number, since it uses as much as digits as its factorization.

25305541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25305541 is about 5030.4613108541. The cubic root of 25305541 is about 293.5881633979.

Adding to 25305541 its reverse (14550352), we get a palindrome (39855893).

The spelling of 25305541 in words is "twenty-five million, three hundred five thousand, five hundred forty-one".