133771725 has 72 divisors (see below), whose sum is σ = 260186472. Its totient is φ = 65433600.

The previous prime is 133771711. The next prime is 133771733. The reversal of 133771725 is 527177331.

It can be written as a sum of positive squares in 12 ways, for example, as 87272964 + 46498761 = 9342^2 + 6819^2 .

It is not a de Polignac number, because 133771725 - 2⁹ = 133771213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133771725.

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 71 ways as a sum of consecutive naturals, for example, 156399 + ... + 157251.

It is an arithmetic number, because the mean of its divisors is an integer number (3613701).

Almost surely, 2^133771725 is an apocalyptic number.

133771725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133771725 is a deficient number, since it is larger than the sum of its proper divisors (126414747).

133771725 is a wasteful number, since it uses less digits than its factorization.

133771725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 919 counting only the distinct ones).

The product of its digits is 30870, while the sum is 36.

The square root of 133771725 is about 11565.9727217385. The cubic root of 133771725 is about 511.4322485175.

The spelling of 133771725 in words is "one hundred thirty-three million, seven hundred seventy-one thousand, seven hundred twenty-five".