25887789 has 8 divisors (see below), whose sum is σ = 38352320. Its totient is φ = 17258508.

The previous prime is 25887781. The next prime is 25887791. The reversal of 25887789 is 98778852.

It is not a de Polignac number, because 25887789 - 2³ = 25887781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25887781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479377 + ... + 479430.

It is an arithmetic number, because the mean of its divisors is an integer number (4794040).

Almost surely, 2^25887789 is an apocalyptic number.

It is an amenable number.

25887789 is a deficient number, since it is larger than the sum of its proper divisors (12464531).

25887789 is an equidigital number, since it uses as much as digits as its factorization.

25887789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958816 (or 958810 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 54.

The square root of 25887789 is about 5088.0044221679. The cubic root of 25887789 is about 295.8228068110.

The spelling of 25887789 in words is "twenty-five million, eight hundred eighty-seven thousand, seven hundred eighty-nine".