25594489 has 4 divisors (see below), whose sum is σ = 25635060. Its totient is φ = 25553920.

The previous prime is 25594483. The next prime is 25594493. The reversal of 25594489 is 98449552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15405625 + 10188864 = 3925^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 25594489 - 2⁹ = 25593977 is a prime.

It is a super-2 number, since 2×25594489² = 1310155734342242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25594483) 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, 19324 + ... + 20605.

It is an arithmetic number, because the mean of its divisors is an integer number (6408765).

Almost surely, 2^25594489 is an apocalyptic number.

It is an amenable number.

25594489 is a deficient number, since it is larger than the sum of its proper divisors (40571).

25594489 is an equidigital number, since it uses as much as digits as its factorization.

25594489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40570.

The product of its digits is 518400, while the sum is 46.

The square root of 25594489 is about 5059.0996234508. The cubic root of 25594489 is about 294.7013697301.

The spelling of 25594489 in words is "twenty-five million, five hundred ninety-four thousand, four hundred eighty-nine".