133334431525 has 12 divisors (see below), whose sum is σ = 165766390272. Its totient is φ = 106389032240.

The previous prime is 133334431499. The next prime is 133334431537. The reversal of 133334431525 is 525134433331.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-133334431525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6953059 + ... + 6972208.

It is an arithmetic number, because the mean of its divisors is an integer number (13813865856).

Almost surely, 2^133334431525 is an apocalyptic number.

It is an amenable number.

133334431525 is a deficient number, since it is larger than the sum of its proper divisors (32431958747).

133334431525 is a wasteful number, since it uses less digits than its factorization.

133334431525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13925660 (or 13925655 counting only the distinct ones).

The product of its digits is 194400, while the sum is 37.

Adding to 133334431525 its reverse (525134433331), we get a palindrome (658468864856).

The spelling of 133334431525 in words is "one hundred thirty-three billion, three hundred thirty-four million, four hundred thirty-one thousand, five hundred twenty-five".