12525122 has 4 divisors (see below), whose sum is σ = 18787686. Its totient is φ = 6262560.

The previous prime is 12525113. The next prime is 12525127. The reversal of 12525122 is 22152521.

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: 22152521 = 277 ⋅79973.

It can be written as a sum of positive squares in only one way, i.e., 9431041 + 3094081 = 3071^2 + 1759^2 .

It is a super-2 number, since 2×12525122² = 313757362229768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12525094 and 12525103.

It is not an unprimeable number, because it can be changed into a prime (12525127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3131279 + ... + 3131282.

Almost surely, 2^12525122 is an apocalyptic number.

12525122 is a deficient number, since it is larger than the sum of its proper divisors (6262564).

12525122 is an equidigital number, since it uses as much as digits as its factorization.

12525122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6262563.

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

The square root of 12525122 is about 3539.0849099732. The cubic root of 12525122 is about 232.2348123008.

Adding to 12525122 its reverse (22152521), we get a palindrome (34677643).

The spelling of 12525122 in words is "twelve million, five hundred twenty-five thousand, one hundred twenty-two".