12985170725 has 12 divisors (see below), whose sum is σ = 16621019520. Its totient is φ = 10053034800.

The previous prime is 12985170719. The next prime is 12985170733. The reversal of 12985170725 is 52707158921.

It is not a de Polignac number, because 12985170725 - 2¹² = 12985166629 is a prime.

It is a super-2 number, since 2×12985170725² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12985170725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8376755 + ... + 8378304.

It is an arithmetic number, because the mean of its divisors is an integer number (1385084960).

Almost surely, 2^12985170725 is an apocalyptic number.

It is an amenable number.

12985170725 is a deficient number, since it is larger than the sum of its proper divisors (3635848795).

12985170725 is a wasteful number, since it uses less digits than its factorization.

12985170725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755100 (or 16755095 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 12985170725 in words is "twelve billion, nine hundred eighty-five million, one hundred seventy thousand, seven hundred twenty-five".