400435204412025 has 36 divisors (see below), whose sum is σ = 718235543545260. Its totient is φ = 213264221616000.

The previous prime is 400435204412003. The next prime is 400435204412039. The reversal of 400435204412025 is 520214402534004.

400435204412025 is a `hidden beast` number, since 4 + 0 + 0 + 4 + 3 + 5 + 2 + 0 + 441 + 202 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 15541540060176 + 384893664351849 = 3942276^2 + 19618707^2 .

It is not a de Polignac number, because 400435204412025 - 2¹⁸ = 400435204149881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1254926526 + ... + 1255245575.

Almost surely, 2^{400435204412025} is an apocalyptic number.

400435204412025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

400435204412025 is a deficient number, since it is larger than the sum of its proper divisors (317800339133235).

400435204412025 is a wasteful number, since it uses less digits than its factorization.

400435204412025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510172826 (or 2510172818 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 400435204412025 its reverse (520214402534004), we get a palindrome (920649606946029).

The spelling of 400435204412025 in words is "four hundred trillion, four hundred thirty-five billion, two hundred four million, four hundred twelve thousand, twenty-five".