425688444 has 18 divisors (see below), whose sum is σ = 1076045880. Its totient is φ = 141896136.

The previous prime is 425688401. The next prime is 425688463. The reversal of 425688444 is 444886524.

425688444 is a `hidden beast` number, since 4 + 2 + 568 + 84 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×425688444² = 362421302710282272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425688444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5912304 + ... + 5912375.

Almost surely, 2^425688444 is an apocalyptic number.

It is an amenable number.

425688444 is an abundant number, since it is smaller than the sum of its proper divisors (650357436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425688444 is a wasteful number, since it uses less digits than its factorization.

425688444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11824689 (or 11824684 counting only the distinct ones).

The product of its digits is 983040, while the sum is 45.

The square root of 425688444 is about 20632.2185913197. The cubic root of 425688444 is about 752.2530436152.

The spelling of 425688444 in words is "four hundred twenty-five million, six hundred eighty-eight thousand, four hundred forty-four".