133265031525 has 72 divisors (see below), whose sum is σ = 243099994176. Its totient is φ = 69770937600.

The previous prime is 133265031509. The next prime is 133265031553. The reversal of 133265031525 is 525130562331.

133265031525 is a `hidden beast` number, since 1 + 33 + 26 + 50 + 31 + 525 = 666.

It is not a de Polignac number, because 133265031525 - 2⁴ = 133265031509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133265031525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3704274 + ... + 3740076.

It is an arithmetic number, because the mean of its divisors is an integer number (3376388808).

Almost surely, 2^133265031525 is an apocalyptic number.

133265031525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133265031525 is a deficient number, since it is larger than the sum of its proper divisors (109834962651).

133265031525 is a wasteful number, since it uses less digits than its factorization.

133265031525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36123 (or 36115 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 133265031525 its reverse (525130562331), we get a palindrome (658395593856).

The spelling of 133265031525 in words is "one hundred thirty-three billion, two hundred sixty-five million, thirty-one thousand, five hundred twenty-five".