12501501405 has 16 divisors (see below), whose sum is σ = 20379807360. Its totient is φ = 6541665728.

The previous prime is 12501501379. The next prime is 12501501437. The reversal of 12501501405 is 50410510521.

It is a cyclic number.

It is not a de Polignac number, because 12501501405 - 2⁵ = 12501501373 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7861785 + ... + 7863374.

It is an arithmetic number, because the mean of its divisors is an integer number (1273737960).

Almost surely, 2^12501501405 is an apocalyptic number.

12501501405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12501501405 is a deficient number, since it is larger than the sum of its proper divisors (7878305955).

12501501405 is a wasteful number, since it uses less digits than its factorization.

12501501405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15725220.

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 12501501405 in words is "twelve billion, five hundred one million, five hundred one thousand, four hundred five".