23840025 has 72 divisors (see below), whose sum is σ = 45122112. Its totient is φ = 11088000.

The previous prime is 23840021. The next prime is 23840027. The reversal of 23840025 is 52004832.

It is not a de Polignac number, because 23840025 - 2² = 23840021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23839977 and 23840004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23840021) 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 71 ways as a sum of consecutive naturals, for example, 335740 + ... + 335810.

It is an arithmetic number, because the mean of its divisors is an integer number (626696).

Almost surely, 2^23840025 is an apocalyptic number.

23840025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23840025 is a deficient number, since it is larger than the sum of its proper divisors (21282087).

23840025 is a wasteful number, since it uses less digits than its factorization.

23840025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 23840025 is about 4882.6248063926. The cubic root of 23840025 is about 287.8075851130.

Adding to 23840025 its reverse (52004832), we get a palindrome (75844857).

It can be divided in two parts, 23 and 840025, that added together give a palindrome (840048).

The spelling of 23840025 in words is "twenty-three million, eight hundred forty thousand, twenty-five".