23511225 has 24 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 12438400.

The previous prime is 23511211. The next prime is 23511251. The reversal of 23511225 is 52211532.

It is not a de Polignac number, because 23511225 - 2⁴ = 23511209 is a prime.

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, 8629 + ... + 11021.

It is an arithmetic number, because the mean of its divisors is an integer number (1632708).

Almost surely, 2^23511225 is an apocalyptic number.

23511225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23511225 is a deficient number, since it is larger than the sum of its proper divisors (15673767).

23511225 is a wasteful number, since it uses less digits than its factorization.

23511225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537 (or 2532 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 23511225 is about 4848.8374895432. The cubic root of 23511225 is about 286.4783143161.

Adding to 23511225 its reverse (52211532), we get a palindrome (75722757).

The spelling of 23511225 in words is "twenty-three million, five hundred eleven thousand, two hundred twenty-five".