25580867 has 4 divisors (see below), whose sum is σ = 27548640. Its totient is φ = 23613096.

The previous prime is 25580839. The next prime is 25580881. The reversal of 25580867 is 76808552.

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

It is not a de Polignac number, because 25580867 - 2¹⁰ = 25579843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25586867) 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, 983867 + ... + 983892.

It is an arithmetic number, because the mean of its divisors is an integer number (6887160).

Almost surely, 2^25580867 is an apocalyptic number.

25580867 is a deficient number, since it is larger than the sum of its proper divisors (1967773).

25580867 is a wasteful number, since it uses less digits than its factorization.

25580867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967772.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 25580867 is about 5057.7531572824. The cubic root of 25580867 is about 294.6490780765.

The spelling of 25580867 in words is "twenty-five million, five hundred eighty thousand, eight hundred sixty-seven".