133522425 has 72 divisors (see below), whose sum is σ = 256372480. Its totient is φ = 68817600.

The previous prime is 133522399. The next prime is 133522453. The reversal of 133522425 is 524225331.

It is a happy number.

133522425 is a `hidden beast` number, since 133 + 522 + 4 + 2 + 5 = 666.

It is not a de Polignac number, because 133522425 - 2¹⁴ = 133506041 is a prime.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 187971 + ... + 188679.

Almost surely, 2^133522425 is an apocalyptic number.

133522425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133522425 is a deficient number, since it is larger than the sum of its proper divisors (122850055).

133522425 is an equidigital number, since it uses as much as digits as its factorization.

133522425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765 (or 748 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 133522425 is about 11555.1903922004. The cubic root of 133522425 is about 511.1143453989.

Adding to 133522425 its reverse (524225331), we get a palindrome (657747756).

The spelling of 133522425 in words is "one hundred thirty-three million, five hundred twenty-two thousand, four hundred twenty-five".