40525669 has 2 divisors, whose sum is σ = 40525670. Its totient is φ = 40525668.

The previous prime is 40525643. The next prime is 40525679. The reversal of 40525669 is 96652504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40475044 + 50625 = 6362^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 40525669 - 2¹⁷ = 40394597 is a prime.

It is a super-2 number, since 2×40525669² = 3284659695795122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40525679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20262834 + 20262835.

It is an arithmetic number, because the mean of its divisors is an integer number (20262835).

Almost surely, 2^40525669 is an apocalyptic number.

It is an amenable number.

40525669 is a deficient number, since it is larger than the sum of its proper divisors (1).

40525669 is an equidigital number, since it uses as much as digits as its factorization.

40525669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 40525669 is about 6365.9774583327. The cubic root of 40525669 is about 343.4868097148.

The spelling of 40525669 in words is "forty million, five hundred twenty-five thousand, six hundred sixty-nine".