425686428 has 48 divisors (see below), whose sum is σ = 1117279520. Its totient is φ = 141892560.

The previous prime is 425686423. The next prime is 425686439. The reversal of 425686428 is 824686524.

425686428 is a `hidden beast` number, since 4 + 2 + 568 + 64 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425686423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15583 + ... + 33078.

Almost surely, 2^425686428 is an apocalyptic number.

It is an amenable number.

425686428 is an abundant number, since it is smaller than the sum of its proper divisors (691593092).

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

425686428 is an equidigital number, since it uses as much as digits as its factorization.

425686428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48686 (or 48666 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The square root of 425686428 is about 20632.1697356337. The cubic root of 425686428 is about 752.2518560921.

The spelling of 425686428 in words is "four hundred twenty-five million, six hundred eighty-six thousand, four hundred twenty-eight".