12520785 has 16 divisors (see below), whose sum is σ = 20522880. Its totient is φ = 6514560.

The previous prime is 12520777. The next prime is 12520793. The reversal of 12520785 is 58702521.

12520785 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12520777) and next prime (12520793).

It is not a de Polignac number, because 12520785 - 2³ = 12520777 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9565 + ... + 10794.

It is an arithmetic number, because the mean of its divisors is an integer number (1282680).

Almost surely, 2^12520785 is an apocalyptic number.

12520785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12520785 is a deficient number, since it is larger than the sum of its proper divisors (8002095).

12520785 is a wasteful number, since it uses less digits than its factorization.

12520785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20408.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 12520785 is about 3538.4721279106. The cubic root of 12520785 is about 232.2080043475.

It can be divided in two parts, 125 and 20785, that added together give a triangular number (20910 = T₂₀₄).

The spelling of 12520785 in words is "twelve million, five hundred twenty thousand, seven hundred eighty-five".