25189789 has 4 divisors (see below), whose sum is σ = 25565824. Its totient is φ = 24813756.

The previous prime is 25189757. The next prime is 25189793. The reversal of 25189789 is 98798152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25189789 - 2⁵ = 25189757 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 (25189729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187917 + ... + 188050.

It is an arithmetic number, because the mean of its divisors is an integer number (6391456).

Almost surely, 2^25189789 is an apocalyptic number.

It is an amenable number.

25189789 is a deficient number, since it is larger than the sum of its proper divisors (376035).

25189789 is an equidigital number, since it uses as much as digits as its factorization.

25189789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376034.

The product of its digits is 362880, while the sum is 49.

The square root of 25189789 is about 5018.9430162137. The cubic root of 25189789 is about 293.1398378112.

The spelling of 25189789 in words is "twenty-five million, one hundred eighty-nine thousand, seven hundred eighty-nine".