12520214985 has 32 divisors (see below), whose sum is σ = 20248704000. Its totient is φ = 6605509568.

The previous prime is 12520214983. The next prime is 12520215011. The reversal of 12520214985 is 58941202521.

It is a cyclic number.

It is not a de Polignac number, because 12520214985 - 2¹ = 12520214983 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12520214983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1187266 + ... + 1197764.

It is an arithmetic number, because the mean of its divisors is an integer number (632772000).

Almost surely, 2^12520214985 is an apocalyptic number.

12520214985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12520214985 is a deficient number, since it is larger than the sum of its proper divisors (7728489015).

12520214985 is a wasteful number, since it uses less digits than its factorization.

12520214985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11357.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 12520214985 in words is "twelve billion, five hundred twenty million, two hundred fourteen thousand, nine hundred eighty-five".