165632250 has 96 divisors (see below), whose sum is σ = 481021632. Its totient is φ = 37850400.

The previous prime is 165632237. The next prime is 165632267. The reversal of 165632250 is 52236561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34497 + ... + 39003.

It is an arithmetic number, because the mean of its divisors is an integer number (5010642).

Almost surely, 2^165632250 is an apocalyptic number.

165632250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165632250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240510816).

165632250 is an abundant number, since it is smaller than the sum of its proper divisors (315389382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165632250 is a wasteful number, since it uses less digits than its factorization.

165632250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541 (or 4524 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 165632250 is about 12869.8193460514. The cubic root of 165632250 is about 549.1803217202.

The spelling of 165632250 in words is "one hundred sixty-five million, six hundred thirty-two thousand, two hundred fifty".