409991725433 has 2 divisors, whose sum is σ = 409991725434. Its totient is φ = 409991725432.

The previous prime is 409991725379. The next prime is 409991725441. The reversal of 409991725433 is 334527199904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324641271529 + 85350453904 = 569773^2 + 292148^2 .

It is a cyclic number.

It is not a de Polignac number, because 409991725433 - 2⁸ = 409991725177 is a prime.

It is not a weakly prime, because it can be changed into another prime (409991725453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204995862716 + 204995862717.

It is an arithmetic number, because the mean of its divisors is an integer number (204995862717).

Almost surely, 2^409991725433 is an apocalyptic number.

It is an amenable number.

409991725433 is a deficient number, since it is larger than the sum of its proper divisors (1).

409991725433 is an equidigital number, since it uses as much as digits as its factorization.

409991725433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 409991725433 in words is "four hundred nine billion, nine hundred ninety-one million, seven hundred twenty-five thousand, four hundred thirty-three".