400425563 has 2 divisors, whose sum is σ = 400425564. Its totient is φ = 400425562.

The previous prime is 400425541. The next prime is 400425569. The reversal of 400425563 is 365524004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400425563 - 2¹⁴ = 400409179 is a prime.

It is not a weakly prime, because it can be changed into another prime (400425569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200212781 + 200212782.

It is an arithmetic number, because the mean of its divisors is an integer number (200212782).

Almost surely, 2^400425563 is an apocalyptic number.

400425563 is a deficient number, since it is larger than the sum of its proper divisors (1).

400425563 is an equidigital number, since it uses as much as digits as its factorization.

400425563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 400425563 is about 20010.6362467564. The cubic root of 400425563 is about 737.0675050333.

Adding to 400425563 its reverse (365524004), we get a palindrome (765949567).

The spelling of 400425563 in words is "four hundred million, four hundred twenty-five thousand, five hundred sixty-three".