400255332305 has 4 divisors (see below), whose sum is σ = 480306398772. Its totient is φ = 320204265840.

The previous prime is 400255332289. The next prime is 400255332313. The reversal of 400255332305 is 503233552004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165290220481 + 234965111824 = 406559^2 + 484732^2 .

It is not a de Polignac number, because 400255332305 - 2⁴ = 400255332289 is a prime.

It is a super-2 number, since 2×400255332305² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40025533226 + ... + 40025533235.

It is an arithmetic number, because the mean of its divisors is an integer number (120076599693).

Almost surely, 2^400255332305 is an apocalyptic number.

It is an amenable number.

400255332305 is a deficient number, since it is larger than the sum of its proper divisors (80051066467).

400255332305 is an equidigital number, since it uses as much as digits as its factorization.

400255332305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80051066466.

The product of its (nonzero) digits is 54000, while the sum is 32.

Adding to 400255332305 its reverse (503233552004), we get a palindrome (903488884309).

The spelling of 400255332305 in words is "four hundred billion, two hundred fifty-five million, three hundred thirty-two thousand, three hundred five".