165481250 has 96 divisors (see below), whose sum is σ = 354352320. Its totient is φ = 57400000.

The previous prime is 165481237. The next prime is 165481273. The reversal of 165481250 is 52184561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1993709 + ... + 1993791.

It is an arithmetic number, because the mean of its divisors is an integer number (3691170).

Almost surely, 2^165481250 is an apocalyptic number.

165481250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165481250 is an abundant number, since it is smaller than the sum of its proper divisors (188871070).

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

165481250 is an equidigital number, since it uses as much as digits as its factorization.

165481250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 165481250 is about 12863.9515701825. The cubic root of 165481250 is about 549.0133827305.

The spelling of 165481250 in words is "one hundred sixty-five million, four hundred eighty-one thousand, two hundred fifty".