133420625 has 20 divisors (see below), whose sum is σ = 179558148. Its totient is φ = 98520000.

The previous prime is 133420597. The next prime is 133420627. The reversal of 133420625 is 526024331.

It can be written as a sum of positive squares in 10 ways, for example, as 133240849 + 179776 = 11543^2 + 424^2 .

It is not a de Polignac number, because 133420625 - 2¹⁸ = 133158481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133420594 and 133420603.

It is not an unprimeable number, because it can be changed into a prime (133420627) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 86 + ... + 16335.

Almost surely, 2^133420625 is an apocalyptic number.

It is an amenable number.

133420625 is a deficient number, since it is larger than the sum of its proper divisors (46137523).

133420625 is an equidigital number, since it uses as much as digits as its factorization.

133420625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16454 (or 16439 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 133420625 is about 11550.7846053850. The cubic root of 133420625 is about 510.9844179873.

Adding to 133420625 its reverse (526024331), we get a palindrome (659444956).

The spelling of 133420625 in words is "one hundred thirty-three million, four hundred twenty thousand, six hundred twenty-five".