25546489 has 4 divisors (see below), whose sum is σ = 25557120. Its totient is φ = 25535860.

The previous prime is 25546459. The next prime is 25546513. The reversal of 25546489 is 98464552.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25546489 - 2⁹ = 25545977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25546459) 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, 192 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (6389280).

Almost surely, 2^25546489 is an apocalyptic number.

It is an amenable number.

25546489 is a deficient number, since it is larger than the sum of its proper divisors (10631).

25546489 is an equidigital number, since it uses as much as digits as its factorization.

25546489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630.

The product of its digits is 345600, while the sum is 43.

The square root of 25546489 is about 5054.3534700296. The cubic root of 25546489 is about 294.5170264272.

The spelling of 25546489 in words is "twenty-five million, five hundred forty-six thousand, four hundred eighty-nine".