23525217 has 12 divisors (see below), whose sum is σ = 34025940. Its totient is φ = 15662688.

The previous prime is 23525209. The next prime is 23525219. The reversal of 23525217 is 71252532.

It can be written as a sum of positive squares in 2 ways, for example, as 1846881 + 21678336 = 1359^2 + 4656^2 .

It is not a de Polignac number, because 23525217 - 2³ = 23525209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23525219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8803 + ... + 11159.

It is an arithmetic number, because the mean of its divisors is an integer number (2835495).

Almost surely, 2^23525217 is an apocalyptic number.

It is an amenable number.

23525217 is a deficient number, since it is larger than the sum of its proper divisors (10500723).

23525217 is a wasteful number, since it uses less digits than its factorization.

23525217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472 (or 3469 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 23525217 is about 4850.2800950048. The cubic root of 23525217 is about 286.5351327036.

Adding to 23525217 its reverse (71252532), we get a palindrome (94777749).

It can be divided in two parts, 2352 and 5217, that added together give a square (7569 = 87²).

The spelling of 23525217 in words is "twenty-three million, five hundred twenty-five thousand, two hundred seventeen".