12250045 has 4 divisors (see below), whose sum is σ = 14700060. Its totient is φ = 9800032.

The previous prime is 12250019. The next prime is 12250061. The reversal of 12250045 is 54005221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54005221 = 29 ⋅1862249.

It can be written as a sum of positive squares in 2 ways, for example, as 9622404 + 2627641 = 3102^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 12250045 - 2⁷ = 12249917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1225000 + ... + 1225009.

It is an arithmetic number, because the mean of its divisors is an integer number (3675015).

Almost surely, 2^12250045 is an apocalyptic number.

It is an amenable number.

12250045 is a deficient number, since it is larger than the sum of its proper divisors (2450015).

12250045 is an equidigital number, since it uses as much as digits as its factorization.

12250045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450014.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 12250045 is about 3500.0064285655. The cubic root of 12250045 is about 230.5220968742.

Adding to 12250045 its reverse (54005221), we get a palindrome (66255266).

The spelling of 12250045 in words is "twelve million, two hundred fifty thousand, forty-five".