40210525669 has 2 divisors, whose sum is σ = 40210525670. Its totient is φ = 40210525668.

The previous prime is 40210525613. The next prime is 40210525673. The reversal of 40210525669 is 96652501204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40205463169 + 5062500 = 200513^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 40210525669 - 2¹¹ = 40210523621 is a prime.

It is a super-2 number, since 2×40210525669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40210525699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105262834 + 20105262835.

It is an arithmetic number, because the mean of its divisors is an integer number (20105262835).

Almost surely, 2^40210525669 is an apocalyptic number.

It is an amenable number.

40210525669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40210525669 is an equidigital number, since it uses as much as digits as its factorization.

40210525669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 40210525669 in words is "forty billion, two hundred ten million, five hundred twenty-five thousand, six hundred sixty-nine".