25585263 has 12 divisors (see below), whose sum is σ = 40316328. Its totient is φ = 15506160.

The previous prime is 25585253. The next prime is 25585297. The reversal of 25585263 is 36258552.

It is a happy number.

It is not a de Polignac number, because 25585263 - 2⁴ = 25585247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25585253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129120 + ... + 129317.

It is an arithmetic number, because the mean of its divisors is an integer number (3359694).

Almost surely, 2^25585263 is an apocalyptic number.

25585263 is a deficient number, since it is larger than the sum of its proper divisors (14731065).

25585263 is a wasteful number, since it uses less digits than its factorization.

25585263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258454 (or 258451 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 25585263 is about 5058.1877189365. The cubic root of 25585263 is about 294.6659553147.

Subtracting 25585263 from its reverse (36258552), we obtain a square (10673289 = 3267²).

The spelling of 25585263 in words is "twenty-five million, five hundred eighty-five thousand, two hundred sixty-three".