25273345 has 4 divisors (see below), whose sum is σ = 30328020. Its totient is φ = 20218672.

The previous prime is 25273333. The next prime is 25273351. The reversal of 25273345 is 54337252.

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 16056049 + 9217296 = 4007^2 + 3036^2 .

It is a cyclic number.

It is not a de Polignac number, because 25273345 - 2⁷ = 25273217 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2527330 + ... + 2527339.

It is an arithmetic number, because the mean of its divisors is an integer number (7582005).

Almost surely, 2^25273345 is an apocalyptic number.

It is an amenable number.

25273345 is a deficient number, since it is larger than the sum of its proper divisors (5054675).

25273345 is an equidigital number, since it uses as much as digits as its factorization.

25273345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054674.

The product of its digits is 25200, while the sum is 31.

The square root of 25273345 is about 5027.2601882139. The cubic root of 25273345 is about 293.4636007436.

The spelling of 25273345 in words is "twenty-five million, two hundred seventy-three thousand, three hundred forty-five".