133925257778 has 16 divisors (see below), whose sum is σ = 216411883800. Its totient is φ = 61791348096.

The previous prime is 133925257777. The next prime is 133925257783. The reversal of 133925257778 is 877752529331.

It can be written as a sum of positive squares in 4 ways, for example, as 20311095289 + 113614162489 = 142517^2 + 337067^2 .

It is not an unprimeable number, because it can be changed into a prime (133925257777) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 765425 + ... + 923972.

Almost surely, 2^133925257778 is an apocalyptic number.

133925257778 is a deficient number, since it is larger than the sum of its proper divisors (82486626022).

133925257778 is a wasteful number, since it uses less digits than its factorization.

133925257778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692461.

The product of its digits is 22226400, while the sum is 59.

The spelling of 133925257778 in words is "one hundred thirty-three billion, nine hundred twenty-five million, two hundred fifty-seven thousand, seven hundred seventy-eight".