23311225 has 24 divisors (see below), whose sum is σ = 34108928. Its totient is φ = 15465600.

The previous prime is 23311219. The next prime is 23311237. The reversal of 23311225 is 52211332.

It is not a de Polignac number, because 23311225 - 2⁵ = 23311193 is a prime.

It is a super-2 number, since 2×23311225² = 1086826422001250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3277 + ... + 7573.

Almost surely, 2^23311225 is an apocalyptic number.

23311225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23311225 is a deficient number, since it is larger than the sum of its proper divisors (10797703).

23311225 is a wasteful number, since it uses less digits than its factorization.

23311225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345 (or 4340 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 23311225 is about 4828.1699431565. The cubic root of 23311225 is about 285.6636835980.

Adding to 23311225 its reverse (52211332), we get a palindrome (75522557).

The spelling of 23311225 in words is "twenty-three million, three hundred eleven thousand, two hundred twenty-five".