23904025 has 12 divisors (see below), whose sum is σ = 30365244. Its totient is φ = 18656000.

The previous prime is 23903993. The next prime is 23904029. The reversal of 23904025 is 52040932.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4376464 + 19527561 = 2092^2 + 4419^2 .

It is not a de Polignac number, because 23904025 - 2⁵ = 23903993 is a prime.

It is a super-2 number, since 2×23904025² = 1142804822401250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23904029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10636 + ... + 12685.

It is an arithmetic number, because the mean of its divisors is an integer number (2530437).

Almost surely, 2^23904025 is an apocalyptic number.

23904025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23904025 is a deficient number, since it is larger than the sum of its proper divisors (6461219).

23904025 is a wasteful number, since it uses less digits than its factorization.

23904025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23372 (or 23367 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 23904025 is about 4889.1742656608. The cubic root of 23904025 is about 288.0649006578.

Adding to 23904025 its reverse (52040932), we get a palindrome (75944957).

The spelling of 23904025 in words is "twenty-three million, nine hundred four thousand, twenty-five".