405525445895 has 4 divisors (see below), whose sum is σ = 486630535080. Its totient is φ = 324420356712.

The previous prime is 405525445891. The next prime is 405525445909. The reversal of 405525445895 is 598544525504.

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

It is a cyclic number.

It is not a de Polignac number, because 405525445895 - 2² = 405525445891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405525445895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405525445891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40552544585 + ... + 40552544594.

It is an arithmetic number, because the mean of its divisors is an integer number (121657633770).

Almost surely, 2^405525445895 is an apocalyptic number.

405525445895 is a deficient number, since it is larger than the sum of its proper divisors (81105089185).

405525445895 is an equidigital number, since it uses as much as digits as its factorization.

405525445895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81105089184.

The product of its (nonzero) digits is 28800000, while the sum is 56.

The spelling of 405525445895 in words is "four hundred five billion, five hundred twenty-five million, four hundred forty-five thousand, eight hundred ninety-five".