25317489 has 4 divisors (see below), whose sum is σ = 33756656. Its totient is φ = 16878324.

The previous prime is 25317469. The next prime is 25317521. The reversal of 25317489 is 98471352.

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 25317489 - 2¹¹ = 25315441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25317419) 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, 4219579 + ... + 4219584.

It is an arithmetic number, because the mean of its divisors is an integer number (8439164).

Almost surely, 2^25317489 is an apocalyptic number.

It is an amenable number.

25317489 is a deficient number, since it is larger than the sum of its proper divisors (8439167).

25317489 is an equidigital number, since it uses as much as digits as its factorization.

25317489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8439166.

The product of its digits is 60480, while the sum is 39.

The square root of 25317489 is about 5031.6487357525. The cubic root of 25317489 is about 293.6343619683.

The spelling of 25317489 in words is "twenty-five million, three hundred seventeen thousand, four hundred eighty-nine".