25117305 has 16 divisors (see below), whose sum is σ = 40279680. Its totient is φ = 13365248.

The previous prime is 25117249. The next prime is 25117327. The reversal of 25117305 is 50371152.

It is a cyclic number.

It is not a de Polignac number, because 25117305 - 2⁶ = 25117241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5881 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (2517480).

Almost surely, 2^25117305 is an apocalyptic number.

It is an amenable number.

25117305 is a deficient number, since it is larger than the sum of its proper divisors (15162375).

25117305 is a wasteful number, since it uses less digits than its factorization.

25117305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 25117305 is about 5011.7167717260. The cubic root of 25117305 is about 292.8583962440.

Adding to 25117305 its reverse (50371152), we get a palindrome (75488457).

The spelling of 25117305 in words is "twenty-five million, one hundred seventeen thousand, three hundred five".