25309089 has 12 divisors (see below), whose sum is σ = 39369876. Its totient is φ = 15574752.

The previous prime is 25309087. The next prime is 25309091. The reversal of 25309089 is 98090352.

It is an interprime number because it is at equal distance from previous prime (25309087) and next prime (25309091).

It can be written as a sum of positive squares in 2 ways, for example, as 12110400 + 13198689 = 3480^2 + 3633^2 .

It is not a de Polignac number, because 25309089 - 2¹ = 25309087 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25309087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108042 + ... + 108275.

It is an arithmetic number, because the mean of its divisors is an integer number (3280823).

Almost surely, 2^25309089 is an apocalyptic number.

It is an amenable number.

25309089 is a deficient number, since it is larger than the sum of its proper divisors (14060787).

25309089 is a wasteful number, since it uses less digits than its factorization.

25309089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216336 (or 216333 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 25309089 is about 5030.8139500482. The cubic root of 25309089 is about 293.6018837411.

The spelling of 25309089 in words is "twenty-five million, three hundred nine thousand, eighty-nine".