166252498725 has 12 divisors (see below), whose sum is σ = 274870798016. Its totient is φ = 88667999280.

The previous prime is 166252498723. The next prime is 166252498751. The reversal of 166252498725 is 527894252661.

It is not a de Polignac number, because 166252498725 - 2¹ = 166252498723 is a prime.

It is a super-2 number, since 2×166252498725² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166252498723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108349917 + ... + 1108350066.

Almost surely, 2^166252498725 is an apocalyptic number.

166252498725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166252498725 is a deficient number, since it is larger than the sum of its proper divisors (108618299291).

166252498725 is a wasteful number, since it uses less digits than its factorization.

166252498725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216699996 (or 2216699991 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 166252498725 in words is "one hundred sixty-six billion, two hundred fifty-two million, four hundred ninety-eight thousand, seven hundred twenty-five".