25725871 has 8 divisors (see below), whose sum is σ = 26722080. Its totient is φ = 24736992.

The previous prime is 25725859. The next prime is 25725881. The reversal of 25725871 is 17852752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25725871 - 2¹⁷ = 25594799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25725871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25725881) 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 7 ways as a sum of consecutive naturals, for example, 5941 + ... + 9313.

It is an arithmetic number, because the mean of its divisors is an integer number (3340260).

Almost surely, 2^25725871 is an apocalyptic number.

25725871 is a deficient number, since it is larger than the sum of its proper divisors (996209).

25725871 is a wasteful number, since it uses less digits than its factorization.

25725871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3665.

The product of its digits is 39200, while the sum is 37.

The square root of 25725871 is about 5072.0677243113. The cubic root of 25725871 is about 295.2047644727.

The spelling of 25725871 in words is "twenty-five million, seven hundred twenty-five thousand, eight hundred seventy-one".