12512523990 has 32 divisors (see below), whose sum is σ = 30728434176. Its totient is φ = 3259075680.

The previous prime is 12512523953. The next prime is 12512524019. The reversal of 12512523990 is 9932521521.

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, 4848526 + ... + 4851105.

It is an arithmetic number, because the mean of its divisors is an integer number (960263568).

Almost surely, 2^12512523990 is an apocalyptic number.

12512523990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12512523990 is an abundant number, since it is smaller than the sum of its proper divisors (18215910186).

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

12512523990 is a wasteful number, since it uses less digits than its factorization.

12512523990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699684.

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 12512523990 in words is "twelve billion, five hundred twelve million, five hundred twenty-three thousand, nine hundred ninety".