166798525 has 12 divisors (see below), whose sum is σ = 209745504. Its totient is φ = 131558000.

The previous prime is 166798523. The next prime is 166798529. The reversal of 166798525 is 525897661.

166798525 = 2571² + 2572² + ... + 2595².

It is not a de Polignac number, because 166798525 - 2¹ = 166798523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166798523) 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, 45211 + ... + 48760.

It is an arithmetic number, because the mean of its divisors is an integer number (17478792).

Almost surely, 2^166798525 is an apocalyptic number.

It is an amenable number.

166798525 is a deficient number, since it is larger than the sum of its proper divisors (42946979).

166798525 is an equidigital number, since it uses as much as digits as its factorization.

166798525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94052 (or 94047 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The square root of 166798525 is about 12915.0503289767. The cubic root of 166798525 is about 550.4662987676.

The spelling of 166798525 in words is "one hundred sixty-six million, seven hundred ninety-eight thousand, five hundred twenty-five".