12505516430 has 32 divisors (see below), whose sum is σ = 24612318720. Its totient is φ = 4537084320.

The previous prime is 12505516417. The next prime is 12505516451. The reversal of 12505516430 is 3461550521.

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, 81194 + ... + 177773.

It is an arithmetic number, because the mean of its divisors is an integer number (769134960).

Almost surely, 2^12505516430 is an apocalyptic number.

12505516430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12505516430 is a deficient number, since it is larger than the sum of its proper divisors (12106802290).

12505516430 is a wasteful number, since it uses less digits than its factorization.

12505516430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259424.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 12505516430 in words is "twelve billion, five hundred five million, five hundred sixteen thousand, four hundred thirty".