133525272637 has 4 divisors (see below), whose sum is σ = 133531721856. Its totient is φ = 133518823420.

The previous prime is 133525272631. The next prime is 133525272667. The reversal of 133525272637 is 736272525331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133525272637 - 2¹⁹ = 133524748349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133525272631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3193453 + ... + 3234994.

It is an arithmetic number, because the mean of its divisors is an integer number (33382930464).

Almost surely, 2^133525272637 is an apocalyptic number.

It is an amenable number.

133525272637 is a deficient number, since it is larger than the sum of its proper divisors (6449219).

133525272637 is an equidigital number, since it uses as much as digits as its factorization.

133525272637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449218.

The product of its digits is 1587600, while the sum is 46.

Adding to 133525272637 its reverse (736272525331), we get a palindrome (869797797968).

The spelling of 133525272637 in words is "one hundred thirty-three billion, five hundred twenty-five million, two hundred seventy-two thousand, six hundred thirty-seven".