409399834497025 has 12 divisors (see below), whose sum is σ = 507751923664684. Its totient is φ = 327457848960000.

The previous prime is 409399834497023. The next prime is 409399834497103. The reversal of 409399834497025 is 520794438993904.

It can be written as a sum of positive squares in 6 ways, for example, as 65647135653264 + 343752698843761 = 8102292^2 + 18540569^2 .

It is not a de Polignac number, because 409399834497025 - 2¹ = 409399834497023 is a prime.

It is a super-2 number, since 2×409399834497025² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409399834497023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1550331276 + ... + 1550595325.

Almost surely, 2^{409399834497025} is an apocalyptic number.

It is an amenable number.

409399834497025 is a deficient number, since it is larger than the sum of its proper divisors (98352089167659).

409399834497025 is a wasteful number, since it uses less digits than its factorization.

409399834497025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100931892 (or 3100931887 counting only the distinct ones).

The product of its (nonzero) digits is 2116316160, while the sum is 76.

The spelling of 409399834497025 in words is "four hundred nine trillion, three hundred ninety-nine billion, eight hundred thirty-four million, four hundred ninety-seven thousand, twenty-five".