25180289 has 2 divisors, whose sum is σ = 25180290. Its totient is φ = 25180288.

The previous prime is 25180171. The next prime is 25180321. The reversal of 25180289 is 98208152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25170289 + 10000 = 5017^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 25180289 - 2²⁰ = 24131713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25180489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12590144 + 12590145.

It is an arithmetic number, because the mean of its divisors is an integer number (12590145).

Almost surely, 2^25180289 is an apocalyptic number.

It is an amenable number.

25180289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25180289 is an equidigital number, since it uses as much as digits as its factorization.

25180289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 25180289 is about 5017.9965125536. The cubic root of 25180289 is about 293.1029818902.

Adding to 25180289 its sum of digits (35), we get a square (25180324 = 5018²).

The spelling of 25180289 in words is "twenty-five million, one hundred eighty thousand, two hundred eighty-nine".