12225425 has 12 divisors (see below), whose sum is σ = 15220380. Its totient is φ = 9741120.

The previous prime is 12225407. The next prime is 12225427. The reversal of 12225425 is 52452221.

12225425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 274576 + 11950849 = 524^2 + 3457^2 .

It is not a de Polignac number, because 12225425 - 2⁶ = 12225361 is a prime.

It is a super-2 number, since 2×12225425² = 298922032861250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12225425.

It is not an unprimeable number, because it can be changed into a prime (12225427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6491 + ... + 8159.

It is an arithmetic number, because the mean of its divisors is an integer number (1268365).

Almost surely, 2^12225425 is an apocalyptic number.

It is an amenable number.

12225425 is a deficient number, since it is larger than the sum of its proper divisors (2994955).

12225425 is a wasteful number, since it uses less digits than its factorization.

12225425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1967 counting only the distinct ones).

The product of its digits is 1600, while the sum is 23.

The square root of 12225425 is about 3496.4875232153. The cubic root of 12225425 is about 230.3675597431.

Adding to 12225425 its reverse (52452221), we get a palindrome (64677646).

The spelling of 12225425 in words is "twelve million, two hundred twenty-five thousand, four hundred twenty-five".