23400225 has 24 divisors (see below), whose sum is σ = 42988320. Its totient is φ = 12479760.

The previous prime is 23400203. The next prime is 23400239. The reversal of 23400225 is 52200432.

It is not a de Polignac number, because 23400225 - 2⁶ = 23400161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23400198 and 23400207.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16659 + ... + 18008.

It is an arithmetic number, because the mean of its divisors is an integer number (1791180).

Almost surely, 2^23400225 is an apocalyptic number.

23400225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23400225 is a deficient number, since it is larger than the sum of its proper divisors (19588095).

23400225 is a wasteful number, since it uses less digits than its factorization.

23400225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34686 (or 34675 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 23400225 is about 4837.3779054360. The cubic root of 23400225 is about 286.0267673449.

Adding to 23400225 its reverse (52200432), we get a palindrome (75600657).

The spelling of 23400225 in words is "twenty-three million, four hundred thousand, two hundred twenty-five".