425581616 has 40 divisors (see below), whose sum is σ = 846802944. Its totient is φ = 207103040.

The previous prime is 425581613. The next prime is 425581657. The reversal of 425581616 is 616185524.

It is a happy number.

It is a super-2 number, since 2×425581616² = 362239423754342912, 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 425581616.

It is not an unprimeable number, because it can be changed into a prime (425581613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142151 + ... + 145113.

Almost surely, 2^425581616 is an apocalyptic number.

It is an amenable number.

425581616 is a deficient number, since it is larger than the sum of its proper divisors (421221328).

425581616 is a wasteful number, since it uses less digits than its factorization.

425581616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3203 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 425581616 is about 20629.6295652636. The cubic root of 425581616 is about 752.1901115087.

The spelling of 425581616 in words is "four hundred twenty-five million, five hundred eighty-one thousand, six hundred sixteen".