425664416 has 24 divisors (see below), whose sum is σ = 838508580. Its totient is φ = 212709888.

The previous prime is 425664389. The next prime is 425664433. The reversal of 425664416 is 614466524.

It can be written as a sum of positive squares in 2 ways, for example, as 333427600 + 92236816 = 18260^2 + 9604^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 425664416.

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, 83180 + ... + 88148.

Almost surely, 2^425664416 is an apocalyptic number.

It is an amenable number.

425664416 is a deficient number, since it is larger than the sum of its proper divisors (412844164).

425664416 is a wasteful number, since it uses less digits than its factorization.

425664416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656 (or 7648 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 425664416 is about 20631.6362899311. The cubic root of 425664416 is about 752.2388896986.

The spelling of 425664416 in words is "four hundred twenty-five million, six hundred sixty-four thousand, four hundred sixteen".