25803261 has 24 divisors (see below), whose sum is σ = 41094144. Its totient is φ = 15471360.

The previous prime is 25803247. The next prime is 25803269. The reversal of 25803261 is 16230852.

It is not a de Polignac number, because 25803261 - 2¹⁰ = 25802237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25803269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8260 + ... + 10946.

It is an arithmetic number, because the mean of its divisors is an integer number (1712256).

Almost surely, 2^25803261 is an apocalyptic number.

It is an amenable number.

25803261 is a deficient number, since it is larger than the sum of its proper divisors (15290883).

25803261 is a wasteful number, since it uses less digits than its factorization.

25803261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2798 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 25803261 is about 5079.6910339114. The cubic root of 25803261 is about 295.5004852818.

The spelling of 25803261 in words is "twenty-five million, eight hundred three thousand, two hundred sixty-one".