12401366225 has 12 divisors (see below), whose sum is σ = 15383872140. Its totient is φ = 9917107200.

The previous prime is 12401366213. The next prime is 12401366239. The reversal of 12401366225 is 52266310421.

It can be written as a sum of positive squares in 6 ways, for example, as 4349534401 + 8051831824 = 65951^2 + 89732^2 .

It is not a de Polignac number, because 12401366225 - 2⁴ = 12401366209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12401366191 and 12401366200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35360 + ... + 161409.

It is an arithmetic number, because the mean of its divisors is an integer number (1281989345).

Almost surely, 2^12401366225 is an apocalyptic number.

It is an amenable number.

12401366225 is a deficient number, since it is larger than the sum of its proper divisors (2982505915).

12401366225 is a wasteful number, since it uses less digits than its factorization.

12401366225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199300 (or 199295 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 12401366225 its reverse (52266310421), we get a palindrome (64667676646).

The spelling of 12401366225 in words is "twelve billion, four hundred one million, three hundred sixty-six thousand, two hundred twenty-five".