133261724125 has 32 divisors (see below), whose sum is σ = 167988094560. Its totient is φ = 105535872000.

The previous prime is 133261724117. The next prime is 133261724159. The reversal of 133261724125 is 521427162331.

It can be written as a sum of positive squares in 16 ways, for example, as 62307148996 + 70954575129 = 249614^2 + 266373^2 .

It is not a de Polignac number, because 133261724125 - 2³ = 133261724117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17667855 + ... + 17675395.

It is an arithmetic number, because the mean of its divisors is an integer number (5249627955).

Almost surely, 2^133261724125 is an apocalyptic number.

It is an amenable number.

133261724125 is a deficient number, since it is larger than the sum of its proper divisors (34726370435).

133261724125 is a wasteful number, since it uses less digits than its factorization.

133261724125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8962 (or 8952 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

Adding to 133261724125 its reverse (521427162331), we get a palindrome (654688886456).

The spelling of 133261724125 in words is "one hundred thirty-three billion, two hundred sixty-one million, seven hundred twenty-four thousand, one hundred twenty-five".