23670225 has 30 divisors (see below), whose sum is σ = 43849190. Its totient is φ = 12623040.

The previous prime is 23670221. The next prime is 23670233. The reversal of 23670225 is 52207632.

It can be written as a sum of positive squares in 3 ways, for example, as 7485696 + 16184529 = 2736^2 + 4023^2 .

It is not a de Polignac number, because 23670225 - 2² = 23670221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23670221) 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 29 ways as a sum of consecutive naturals, for example, 3820 + ... + 7869.

Almost surely, 2^23670225 is an apocalyptic number.

23670225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23670225 is a deficient number, since it is larger than the sum of its proper divisors (20178965).

23670225 is a wasteful number, since it uses less digits than its factorization.

23670225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11711 (or 11697 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 23670225 is about 4865.2055455037. The cubic root of 23670225 is about 287.1226555498.

Adding to 23670225 its reverse (52207632), we get a palindrome (75877857).

The spelling of 23670225 in words is "twenty-three million, six hundred seventy thousand, two hundred twenty-five".