12402455425 has 12 divisors (see below), whose sum is σ = 15608584816. Its totient is φ = 9773874000.

The previous prime is 12402455413. The next prime is 12402455449. The reversal of 12402455425 is 52455420421.

It is not a de Polignac number, because 12402455425 - 2³¹ = 10254971777 is a prime.

It is a super-2 number, since 2×12402455425² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 3700551 + ... + 3703900.

Almost surely, 2^12402455425 is an apocalyptic number.

It is an amenable number.

12402455425 is a deficient number, since it is larger than the sum of its proper divisors (3206129391).

12402455425 is an equidigital number, since it uses as much as digits as its factorization.

12402455425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404528 (or 7404523 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 12402455425 its reverse (52455420421), we get a palindrome (64857875846).

The spelling of 12402455425 in words is "twelve billion, four hundred two million, four hundred fifty-five thousand, four hundred twenty-five".