12543425 has 12 divisors (see below), whose sum is σ = 15646320. Its totient is φ = 9975120.

The previous prime is 12543413. The next prime is 12543449. The reversal of 12543425 is 52434521.

It is a happy number.

It is not a de Polignac number, because 12543425 - 2¹⁰ = 12542401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12543394 and 12543403.

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, 3074 + ... + 5876.

It is an arithmetic number, because the mean of its divisors is an integer number (1303860).

Almost surely, 2^12543425 is an apocalyptic number.

It is an amenable number.

12543425 is a deficient number, since it is larger than the sum of its proper divisors (3102895).

12543425 is a wasteful number, since it uses less digits than its factorization.

12543425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992 (or 2987 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 12543425 is about 3541.6698039202. The cubic root of 12543425 is about 232.3478790632.

Adding to 12543425 its reverse (52434521), we get a palindrome (64977946).

The spelling of 12543425 in words is "twelve million, five hundred forty-three thousand, four hundred twenty-five".