12515802530 has 32 divisors (see below), whose sum is σ = 28087413120. Its totient is φ = 3901029120.

The previous prime is 12515802529. The next prime is 12515802583. The reversal of 12515802530 is 3520851521.

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, 8126375 + ... + 8127914.

It is an arithmetic number, because the mean of its divisors is an integer number (877731660).

Almost surely, 2^12515802530 is an apocalyptic number.

12515802530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12515802530 is an abundant number, since it is smaller than the sum of its proper divisors (15571610590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12515802530 is a wasteful number, since it uses less digits than its factorization.

12515802530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16254314.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 12515802530 in words is "twelve billion, five hundred fifteen million, eight hundred two thousand, five hundred thirty".