12402225 has 36 divisors (see below), whose sum is σ = 24238032. Its totient is φ = 6012000.

The previous prime is 12402223. The next prime is 12402233. The reversal of 12402225 is 52220421.

It is not a de Polignac number, because 12402225 - 2¹ = 12402223 is a prime.

It is a super-4 number, since 4×12402225⁴ (a number of 29 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12402198 and 12402207.

It is not an unprimeable number, because it can be changed into a prime (12402223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31 + ... + 4980.

Almost surely, 2^12402225 is an apocalyptic number.

12402225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12402225 is a deficient number, since it is larger than the sum of its proper divisors (11835807).

12402225 is a wasteful number, since it uses less digits than its factorization.

12402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038 (or 5030 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12402225 is about 3521.6792869312. The cubic root of 12402225 is about 231.4727486049.

Adding to 12402225 its reverse (52220421), we get a palindrome (64622646).

The spelling of 12402225 in words is "twelve million, four hundred two thousand, two hundred twenty-five".