25983261 has 24 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 16565472.

The previous prime is 25983257. The next prime is 25983263. The reversal of 25983261 is 16238952.

25983261 is a `hidden beast` number, since 2 + 598 + 3 + 2 + 61 = 666.

It is not a de Polignac number, because 25983261 - 2² = 25983257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25983263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3265 + ... + 7913.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 2^25983261 is an apocalyptic number.

It is an amenable number.

25983261 is a deficient number, since it is larger than the sum of its proper divisors (14639139).

25983261 is an equidigital number, since it uses as much as digits as its factorization.

25983261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687 (or 4675 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 25983261 is about 5097.3778553291. The cubic root of 25983261 is about 296.1860172671.

It can be divided in two parts, 25983 and 261, that added together give a square (26244 = 162²).

The spelling of 25983261 in words is "twenty-five million, nine hundred eighty-three thousand, two hundred sixty-one".