12251705 has 4 divisors (see below), whose sum is σ = 14702052. Its totient is φ = 9801360.

The previous prime is 12251677. The next prime is 12251719. The reversal of 12251705 is 50715221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50715221 = 1873 ⋅27077.

It can be written as a sum of positive squares in 2 ways, for example, as 7139584 + 5112121 = 2672^2 + 2261^2 .

It is not a de Polignac number, because 12251705 - 2⁶ = 12251641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225166 + ... + 1225175.

It is an arithmetic number, because the mean of its divisors is an integer number (3675513).

Almost surely, 2^12251705 is an apocalyptic number.

It is an amenable number.

12251705 is a deficient number, since it is larger than the sum of its proper divisors (2450347).

12251705 is an equidigital number, since it uses as much as digits as its factorization.

12251705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450346.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 12251705 is about 3500.2435629539. The cubic root of 12251705 is about 230.5325090644.

Adding to 12251705 its reverse (50715221), we get a palindrome (62966926).

The spelling of 12251705 in words is "twelve million, two hundred fifty-one thousand, seven hundred five".