25678685 has 16 divisors (see below), whose sum is σ = 31781376. Its totient is φ = 19907328.

The previous prime is 25678663. The next prime is 25678691. The reversal of 25678685 is 58687652.

It is a cyclic number.

It is not a de Polignac number, because 25678685 - 2¹⁶ = 25613149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26072 + ... + 27038.

It is an arithmetic number, because the mean of its divisors is an integer number (1986336).

Almost surely, 2^25678685 is an apocalyptic number.

It is an amenable number.

25678685 is a deficient number, since it is larger than the sum of its proper divisors (6102691).

25678685 is a wasteful number, since it uses less digits than its factorization.

25678685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 806400, while the sum is 47.

The square root of 25678685 is about 5067.4140347913. The cubic root of 25678685 is about 295.0241673201.

The spelling of 25678685 in words is "twenty-five million, six hundred seventy-eight thousand, six hundred eighty-five".