23925609 has 24 divisors (see below), whose sum is σ = 36121800. Its totient is φ = 15259104.

The previous prime is 23925607. The next prime is 23925619. The reversal of 23925609 is 90652932.

23925609 is a `hidden beast` number, since 2 + 3 + 92 + 560 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 451584 + 23474025 = 672^2 + 4845^2 .

It is not a de Polignac number, because 23925609 - 2¹ = 23925607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23925607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219447 + ... + 219555.

It is an arithmetic number, because the mean of its divisors is an integer number (1505075).

Almost surely, 2^23925609 is an apocalyptic number.

23925609 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23925609 is a deficient number, since it is larger than the sum of its proper divisors (12196191).

23925609 is an equidigital number, since it uses as much as digits as its factorization.

23925609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 23925609 is about 4891.3810933110. The cubic root of 23925609 is about 288.1515767493.

It can be divided in two parts, 2392 and 5609, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 23925609 in words is "twenty-three million, nine hundred twenty-five thousand, six hundred nine".