133925257765 has 16 divisors (see below), whose sum is σ = 173364550128. Its totient is φ = 98731846656.

The previous prime is 133925257759. The next prime is 133925257777. The reversal of 133925257765 is 567752529331.

It is a Cunningham number, because it is equal to 365958²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 9852944644 + 124072313121 = 99262^2 + 352239^2 .

It is a cyclic number.

It is not a de Polignac number, because 133925257765 - 2⁷ = 133925257637 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 1698714 + ... + 1775803.

It is an arithmetic number, because the mean of its divisors is an integer number (10835284383).

Almost surely, 2^133925257765 is an apocalyptic number.

It is an amenable number.

133925257765 is a deficient number, since it is larger than the sum of its proper divisors (39439292363).

133925257765 is a wasteful number, since it uses less digits than its factorization.

133925257765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475128.

The product of its digits is 11907000, while the sum is 55.

The spelling of 133925257765 in words is "one hundred thirty-three billion, nine hundred twenty-five million, two hundred fifty-seven thousand, seven hundred sixty-five".