25800071 has 4 divisors (see below), whose sum is σ = 28145544. Its totient is φ = 23454600.

The previous prime is 25800041. The next prime is 25800079. The reversal of 25800071 is 17000852.

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 25800071 - 2⁶ = 25800007 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 (25800079) 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 3 ways as a sum of consecutive naturals, for example, 1172720 + ... + 1172741.

It is an arithmetic number, because the mean of its divisors is an integer number (7036386).

Almost surely, 2^25800071 is an apocalyptic number.

25800071 is a deficient number, since it is larger than the sum of its proper divisors (2345473).

25800071 is a wasteful number, since it uses less digits than its factorization.

25800071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345472.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 25800071 is about 5079.3770287310. The cubic root of 25800071 is about 295.4883074232.

The spelling of 25800071 in words is "twenty-five million, eight hundred thousand, seventy-one".