133641425 has 12 divisors (see below), whose sum is σ = 171430620. Its totient is φ = 103225920.

The previous prime is 133641419. The next prime is 133641433. The reversal of 133641425 is 524146331.

It can be written as a sum of positive squares in 6 ways, for example, as 13366336 + 120275089 = 3656^2 + 10967^2 .

It is a de Polignac number, because none of the positive numbers 2^k-133641425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 91442 + ... + 92891.

It is an arithmetic number, because the mean of its divisors is an integer number (14285885).

Almost surely, 2^133641425 is an apocalyptic number.

It is an amenable number.

133641425 is a deficient number, since it is larger than the sum of its proper divisors (37789195).

133641425 is a wasteful number, since it uses less digits than its factorization.

133641425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184372 (or 184367 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 133641425 is about 11560.3384466027. The cubic root of 133641425 is about 511.2661414910.

Adding to 133641425 its reverse (524146331), we get a palindrome (657787756).

The spelling of 133641425 in words is "one hundred thirty-three million, six hundred forty-one thousand, four hundred twenty-five".