425646405 has 24 divisors (see below), whose sum is σ = 739065600. Its totient is φ = 226618080.

The previous prime is 425646401. The next prime is 425646407. The reversal of 425646405 is 504646524.

425646405 is a `hidden beast` number, since 4 + 2 + 5 + 6 + 4 + 640 + 5 = 666.

It is not a de Polignac number, because 425646405 - 2² = 425646401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425646405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425646401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19060 + ... + 34850.

It is an arithmetic number, because the mean of its divisors is an integer number (30794400).

Almost surely, 2^425646405 is an apocalyptic number.

425646405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425646405 is a deficient number, since it is larger than the sum of its proper divisors (313419195).

425646405 is a wasteful number, since it uses less digits than its factorization.

425646405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16401 (or 16398 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 425646405 is about 20631.1997954554. The cubic root of 425646405 is about 752.2282798024.

The spelling of 425646405 in words is "four hundred twenty-five million, six hundred forty-six thousand, four hundred five".