25282591 has 4 divisors (see below), whose sum is σ = 25320832. Its totient is φ = 25244352.

The previous prime is 25282573. The next prime is 25282627. The reversal of 25282591 is 19528252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25282591 - 2⁷ = 25282463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25282501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18111 + ... + 19456.

It is an arithmetic number, because the mean of its divisors is an integer number (6330208).

Almost surely, 2^25282591 is an apocalyptic number.

25282591 is a deficient number, since it is larger than the sum of its proper divisors (38241).

25282591 is an equidigital number, since it uses as much as digits as its factorization.

25282591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38240.

The product of its digits is 14400, while the sum is 34.

The square root of 25282591 is about 5028.1796905043. The cubic root of 25282591 is about 293.4993832862.

The spelling of 25282591 in words is "twenty-five million, two hundred eighty-two thousand, five hundred ninety-one".