165075250 has 32 divisors (see below), whose sum is σ = 319690800. Its totient is φ = 63750400.

The previous prime is 165075247. The next prime is 165075257. The reversal of 165075250 is 52570561.

It can be written as a sum of positive squares in 8 ways, for example, as 3200521 + 161874729 = 1789^2 + 12723^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165075257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4135 + ... + 18634.

Almost surely, 2^165075250 is an apocalyptic number.

165075250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165075250 is a deficient number, since it is larger than the sum of its proper divisors (154615550).

165075250 is a wasteful number, since it uses less digits than its factorization.

165075250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22815 (or 22805 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 165075250 is about 12848.1613470566. The cubic root of 165075250 is about 548.5640227110.

The spelling of 165075250 in words is "one hundred sixty-five million, seventy-five thousand, two hundred fifty".