165025650 has 24 divisors (see below), whose sum is σ = 409263984. Its totient is φ = 44006800.

The previous prime is 165025643. The next prime is 165025687. The reversal of 165025650 is 56520561.

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

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, 549936 + ... + 550235.

It is an arithmetic number, because the mean of its divisors is an integer number (17052666).

Almost surely, 2^165025650 is an apocalyptic number.

165025650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165025650 is an abundant number, since it is smaller than the sum of its proper divisors (244238334).

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

165025650 is a wasteful number, since it uses less digits than its factorization.

165025650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100186 (or 1100181 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 165025650 is about 12846.2309647616. The cubic root of 165025650 is about 548.5090750410.

The spelling of 165025650 in words is "one hundred sixty-five million, twenty-five thousand, six hundred fifty".