25806069 has 24 divisors (see below), whose sum is σ = 39574080. Its totient is φ = 16169472.

The previous prime is 25806059. The next prime is 25806073. The reversal of 25806069 is 96060852.

It is not a de Polignac number, because 25806069 - 2¹¹ = 25804021 is a prime.

It is a super-2 number, since 2×25806069² = 1331906394465522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25806059) 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 23 ways as a sum of consecutive naturals, for example, 11157 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (1648920).

Almost surely, 2^25806069 is an apocalyptic number.

It is an amenable number.

25806069 is a deficient number, since it is larger than the sum of its proper divisors (13768011).

25806069 is a wasteful number, since it uses less digits than its factorization.

25806069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 25806069 is about 5079.9674211554. The cubic root of 25806069 is about 295.5112040209.

It can be divided in two parts, 2580 and 6069, that added together give a square (8649 = 93²).

The spelling of 25806069 in words is "twenty-five million, eight hundred six thousand, sixty-nine".