23666725 has 6 divisors (see below), whose sum is σ = 29346770. Its totient is φ = 18933360.

The previous prime is 23666711. The next prime is 23666749. The reversal of 23666725 is 52766632.

It can be written as a sum of positive squares in 3 ways, for example, as 17956 + 23648769 = 134^2 + 4863^2 .

It is not a de Polignac number, because 23666725 - 2⁵ = 23666693 is a prime.

It is a super-2 number, since 2×23666725² = 1120227744451250, 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 5 ways as a sum of consecutive naturals, for example, 473310 + ... + 473359.

Almost surely, 2^23666725 is an apocalyptic number.

23666725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23666725 is a deficient number, since it is larger than the sum of its proper divisors (5680045).

23666725 is an equidigital number, since it uses as much as digits as its factorization.

23666725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946679 (or 946674 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 23666725 is about 4864.8458351730. The cubic root of 23666725 is about 287.1085030462.

The spelling of 23666725 in words is "twenty-three million, six hundred sixty-six thousand, seven hundred twenty-five".