425181728 has 24 divisors (see below), whose sum is σ = 837901260. Its totient is φ = 212381440.

The previous prime is 425181719. The next prime is 425181739. The reversal of 425181728 is 827181524.

It can be written as a sum of positive squares in 2 ways, for example, as 424854544 + 327184 = 20612^2 + 572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 425181691 and 425181700.

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, 29498 + ... + 41478.

Almost surely, 2^425181728 is an apocalyptic number.

It is an amenable number.

425181728 is a deficient number, since it is larger than the sum of its proper divisors (412719532).

425181728 is a wasteful number, since it uses less digits than its factorization.

425181728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100 (or 13092 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 425181728 is about 20619.9352084336. The cubic root of 425181728 is about 751.9544449543.

The spelling of 425181728 in words is "four hundred twenty-five million, one hundred eighty-one thousand, seven hundred twenty-eight".