12501512890 has 8 divisors (see below), whose sum is σ = 22502723220. Its totient is φ = 5000605152.

The previous prime is 12501512869. The next prime is 12501512923. The reversal of 12501512890 is 9821510521.

It can be written as a sum of positive squares in 2 ways, for example, as 11335222089 + 1166290801 = 106467^2 + 34151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625075635 + ... + 625075654.

Almost surely, 2^12501512890 is an apocalyptic number.

12501512890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12501512890 is a deficient number, since it is larger than the sum of its proper divisors (10001210330).

12501512890 is a wasteful number, since it uses less digits than its factorization.

12501512890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250151296.

The product of its (nonzero) digits is 7200, while the sum is 34.

The spelling of 12501512890 in words is "twelve billion, five hundred one million, five hundred twelve thousand, eight hundred ninety".