133030530225 has 30 divisors (see below), whose sum is σ = 246418531590. Its totient is φ = 70949615040.

The previous prime is 133030530221. The next prime is 133030530233. The reversal of 133030530225 is 522035030331.

133030530225 is a `hidden beast` number, since 1 + 3 + 30 + 305 + 302 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1008761121 + 132021769104 = 31761^2 + 363348^2 .

It is not a de Polignac number, because 133030530225 - 2² = 133030530221 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (133030530221) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 32845020 + ... + 32849069.

It is an arithmetic number, because the mean of its divisors is an integer number (8213951053).

Almost surely, 2^133030530225 is an apocalyptic number.

133030530225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133030530225 is a deficient number, since it is larger than the sum of its proper divisors (113388001365).

133030530225 is an equidigital number, since it uses as much as digits as its factorization.

133030530225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65694111 (or 65694097 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

Adding to 133030530225 its reverse (522035030331), we get a palindrome (655065560556).

The spelling of 133030530225 in words is "one hundred thirty-three billion, thirty million, five hundred thirty thousand, two hundred twenty-five".