12540250785 has 16 divisors (see below), whose sum is σ = 20936767104. Its totient is φ = 6397345152.

The previous prime is 12540250771. The next prime is 12540250817. The reversal of 12540250785 is 58705204521.

12540250785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12540250785 - 2⁴ = 12540250769 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18173932 + ... + 18174621.

It is an arithmetic number, because the mean of its divisors is an integer number (1308547944).

Almost surely, 2^12540250785 is an apocalyptic number.

12540250785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12540250785 is a deficient number, since it is larger than the sum of its proper divisors (8396516319).

12540250785 is a wasteful number, since it uses less digits than its factorization.

12540250785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36348584.

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 12540250785 in words is "twelve billion, five hundred forty million, two hundred fifty thousand, seven hundred eighty-five".