25834989 has 4 divisors (see below), whose sum is σ = 34446656. Its totient is φ = 17223324.

The previous prime is 25834981. The next prime is 25834993. The reversal of 25834989 is 98943852.

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 not a de Polignac number, because 25834989 - 2³ = 25834981 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25834981) 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, 4305829 + ... + 4305834.

It is an arithmetic number, because the mean of its divisors is an integer number (8611664).

Almost surely, 2^25834989 is an apocalyptic number.

It is an amenable number.

25834989 is a deficient number, since it is larger than the sum of its proper divisors (8611667).

25834989 is an equidigital number, since it uses as much as digits as its factorization.

25834989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611666.

The product of its digits is 622080, while the sum is 48.

The square root of 25834989 is about 5082.8130990624. The cubic root of 25834989 is about 295.6215526567.

The spelling of 25834989 in words is "twenty-five million, eight hundred thirty-four thousand, nine hundred eighty-nine".