133265250 has 80 divisors (see below), whose sum is σ = 372725496. Its totient is φ = 35532000.

The previous prime is 133265239. The next prime is 133265263. The reversal of 133265250 is 52562331.

133265250 is a `hidden beast` number, since 1 + 3 + 3 + 2 + 652 + 5 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23707161 + 109558089 = 4869^2 + 10467^2 .

It is a super-3 number, since 3×133265250³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16960 + ... + 23540.

Almost surely, 2^133265250 is an apocalyptic number.

133265250 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 133265250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186362748).

133265250 is an abundant number, since it is smaller than the sum of its proper divisors (239460246).

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

133265250 is an equidigital number, since it uses as much as digits as its factorization.

133265250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610 (or 6591 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 133265250 is about 11544.0569125416. The cubic root of 133265250 is about 510.7859852902.

The spelling of 133265250 in words is "one hundred thirty-three million, two hundred sixty-five thousand, two hundred fifty".