1685025850523 has 16 divisors (see below), whose sum is σ = 1771609753920. Its totient is φ = 1599597103104.

The previous prime is 1685025850489. The next prime is 1685025850579. The reversal of 1685025850523 is 3250585205861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1685025850523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685025850223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137515 + ... + 2159627.

It is an arithmetic number, because the mean of its divisors is an integer number (110725609620).

Almost surely, 2^{1685025850523} is an apocalyptic number.

1685025850523 is a deficient number, since it is larger than the sum of its proper divisors (86583903397).

1685025850523 is a wasteful number, since it uses less digits than its factorization.

1685025850523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022678.

The product of its (nonzero) digits is 2880000, while the sum is 50.

The spelling of 1685025850523 in words is "one trillion, six hundred eighty-five billion, twenty-five million, eight hundred fifty thousand, five hundred twenty-three".