428599825 has 12 divisors (see below), whose sum is σ = 554571648. Its totient is φ = 327971600.

The previous prime is 428599793. The next prime is 428599867. The reversal of 428599825 is 528995824.

It is not a de Polignac number, because 428599825 - 2⁵ = 428599793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372121 + ... + 373270.

It is an arithmetic number, because the mean of its divisors is an integer number (46214304).

Almost surely, 2^428599825 is an apocalyptic number.

It is an amenable number.

428599825 is a deficient number, since it is larger than the sum of its proper divisors (125971823).

428599825 is a wasteful number, since it uses less digits than its factorization.

428599825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745424 (or 745419 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 52.

The square root of 428599825 is about 20702.6526078182. The cubic root of 428599825 is about 753.9640925284.

The spelling of 428599825 in words is "four hundred twenty-eight million, five hundred ninety-nine thousand, eight hundred twenty-five".