12251522 has 4 divisors (see below), whose sum is σ = 18377286. Its totient is φ = 6125760.

The previous prime is 12251501. The next prime is 12251549. The reversal of 12251522 is 22515221.

It is a happy number.

12251522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22515221 = 877 ⋅25673.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 3613801 = 2939^2 + 1901^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12251494 and 12251503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3062879 + ... + 3062882.

Almost surely, 2^12251522 is an apocalyptic number.

12251522 is a deficient number, since it is larger than the sum of its proper divisors (6125764).

12251522 is an equidigital number, since it uses as much as digits as its factorization.

12251522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125763.

The product of its digits is 400, while the sum is 20.

The square root of 12251522 is about 3500.2174218183. The cubic root of 12251522 is about 230.5313612607.

Adding to 12251522 its reverse (22515221), we get a palindrome (34766743).

The spelling of 12251522 in words is "twelve million, two hundred fifty-one thousand, five hundred twenty-two".