25381305 has 48 divisors (see below), whose sum is σ = 46500480. Its totient is φ = 12781824.

The previous prime is 25381273. The next prime is 25381319. The reversal of 25381305 is 50318352.

It is not a de Polignac number, because 25381305 - 2⁵ = 25381273 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141706 + ... + 141884.

It is an arithmetic number, because the mean of its divisors is an integer number (968760).

Almost surely, 2^25381305 is an apocalyptic number.

It is an amenable number.

25381305 is a deficient number, since it is larger than the sum of its proper divisors (21119175).

25381305 is a wasteful number, since it uses less digits than its factorization.

25381305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25381305 is about 5037.9862048243. The cubic root of 25381305 is about 293.8808694073.

Adding to 25381305 its reverse (50318352), we get a palindrome (75699657).

The spelling of 25381305 in words is "twenty-five million, three hundred eighty-one thousand, three hundred five".