25956865 has 8 divisors (see below), whose sum is σ = 33979968. Its totient is φ = 18877680.

The previous prime is 25956863. The next prime is 25956881. The reversal of 25956865 is 56865952.

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

It is not a de Polignac number, because 25956865 - 2¹ = 25956863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25956863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235917 + ... + 236026.

It is an arithmetic number, because the mean of its divisors is an integer number (4247496).

Almost surely, 2^25956865 is an apocalyptic number.

It is an amenable number.

25956865 is a deficient number, since it is larger than the sum of its proper divisors (8023103).

25956865 is a wasteful number, since it uses less digits than its factorization.

25956865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471959.

The product of its digits is 648000, while the sum is 46.

The square root of 25956865 is about 5094.7880230683. The cubic root of 25956865 is about 296.0856863265.

Adding to 25956865 its product of digits (648000), we get a triangular number (26604865 = T₇₂₉₄).

The spelling of 25956865 in words is "twenty-five million, nine hundred fifty-six thousand, eight hundred sixty-five".