12555430 has 32 divisors (see below), whose sum is σ = 23442048. Its totient is φ = 4838400.

The previous prime is 12555397. The next prime is 12555443. The reversal of 12555430 is 3455521.

It is a junction number, because it is equal to n+sod(n) for n = 12555395 and 12555404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46195 + ... + 46465.

It is an arithmetic number, because the mean of its divisors is an integer number (732564).

Almost surely, 2^12555430 is an apocalyptic number.

12555430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12555430 is a deficient number, since it is larger than the sum of its proper divisors (10886618).

12555430 is a wasteful number, since it uses less digits than its factorization.

12555430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 12555430 is about 3543.3642206242. The cubic root of 12555430 is about 232.4219802196.

Subtracting from 12555430 its reverse (3455521), we obtain a palindrome (9099909).

It can be divided in two parts, 125 and 55430, that added together give a palindrome (55555).

The spelling of 12555430 in words is "twelve million, five hundred fifty-five thousand, four hundred thirty".