25280273 has 2 divisors, whose sum is σ = 25280274. Its totient is φ = 25280272.

The previous prime is 25280201. The next prime is 25280327. The reversal of 25280273 is 37208252.

Together with next prime (25280327) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24373969 + 906304 = 4937^2 + 952^2 .

It is a cyclic number.

It is not a de Polignac number, because 25280273 - 2¹⁰ = 25279249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25280573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12640136 + 12640137.

It is an arithmetic number, because the mean of its divisors is an integer number (12640137).

Almost surely, 2^25280273 is an apocalyptic number.

It is an amenable number.

25280273 is a deficient number, since it is larger than the sum of its proper divisors (1).

25280273 is an equidigital number, since it uses as much as digits as its factorization.

25280273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25280273 is about 5027.9491843096. The cubic root of 25280273 is about 293.4904133147.

The spelling of 25280273 in words is "twenty-five million, two hundred eighty thousand, two hundred seventy-three".