23115525 has 24 divisors (see below), whose sum is σ = 38658240. Its totient is φ = 12186240.

The previous prime is 23115509. The next prime is 23115539. The reversal of 23115525 is 52551132.

It is a happy number.

It is not a de Polignac number, because 23115525 - 2⁴ = 23115509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23115495 and 23115504.

It is a congruent number.

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, 4944 + ... + 8406.

It is an arithmetic number, because the mean of its divisors is an integer number (1610760).

Almost surely, 2^23115525 is an apocalyptic number.

23115525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23115525 is a deficient number, since it is larger than the sum of its proper divisors (15542715).

23115525 is a wasteful number, since it uses less digits than its factorization.

23115525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3560 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 23115525 is about 4807.8607508954. The cubic root of 23115525 is about 284.8620446519.

Adding to 23115525 its reverse (52551132), we get a palindrome (75666657).

The spelling of 23115525 in words is "twenty-three million, one hundred fifteen thousand, five hundred twenty-five".