23136225 has 48 divisors (see below), whose sum is σ = 44187648. Its totient is φ = 10463040.

The previous prime is 23136221. The next prime is 23136247. The reversal of 23136225 is 52263132.

It is not a de Polignac number, because 23136225 - 2² = 23136221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23136195 and 23136204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23136221) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 66502 + ... + 66848.

It is an arithmetic number, because the mean of its divisors is an integer number (920576).

Almost surely, 2^23136225 is an apocalyptic number.

23136225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23136225 is a deficient number, since it is larger than the sum of its proper divisors (21051423).

23136225 is a wasteful number, since it uses less digits than its factorization.

23136225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 489 counting only the distinct ones).

The product of its digits is 2160, while the sum is 24.

The square root of 23136225 is about 4810.0129937454. The cubic root of 23136225 is about 284.9470507974.

Adding to 23136225 its reverse (52263132), we get a palindrome (75399357).

The spelling of 23136225 in words is "twenty-three million, one hundred thirty-six thousand, two hundred twenty-five".