405525443903 has 2 divisors, whose sum is σ = 405525443904. Its totient is φ = 405525443902.

The previous prime is 405525443821. The next prime is 405525443987. The reversal of 405525443903 is 309344525504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405525443903 - 2¹⁸ = 405525181759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405525443003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202762721951 + 202762721952.

It is an arithmetic number, because the mean of its divisors is an integer number (202762721952).

Almost surely, 2^405525443903 is an apocalyptic number.

405525443903 is a deficient number, since it is larger than the sum of its proper divisors (1).

405525443903 is an equidigital number, since it uses as much as digits as its factorization.

405525443903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 44.

The spelling of 405525443903 in words is "four hundred five billion, five hundred twenty-five million, four hundred forty-three thousand, nine hundred three".