25869789 has 48 divisors (see below), whose sum is σ = 42831360. Its totient is φ = 14908320.

The previous prime is 25869743. The next prime is 25869791. The reversal of 25869789 is 98796852.

It is a happy number.

It is not a de Polignac number, because 25869789 - 2⁷ = 25869661 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25869709) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251112 + ... + 251214.

It is an arithmetic number, because the mean of its divisors is an integer number (892320).

Almost surely, 2^25869789 is an apocalyptic number.

It is an amenable number.

25869789 is a deficient number, since it is larger than the sum of its proper divisors (16961571).

25869789 is a wasteful number, since it uses less digits than its factorization.

25869789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 219 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 25869789 is about 5086.2352481968. The cubic root of 25869789 is about 295.7542282091.

The spelling of 25869789 in words is "twenty-five million, eight hundred sixty-nine thousand, seven hundred eighty-nine".