428877625 has 32 divisors (see below), whose sum is σ = 588601728. Its totient is φ = 309400000.

The previous prime is 428877623. The next prime is 428877629. The reversal of 428877625 is 526778824.

It is not a de Polignac number, because 428877625 - 2¹ = 428877623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428877623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178935 + ... + 181315.

It is an arithmetic number, because the mean of its divisors is an integer number (18393804).

Almost surely, 2^428877625 is an apocalyptic number.

It is an amenable number.

428877625 is a deficient number, since it is larger than the sum of its proper divisors (159724103).

428877625 is a wasteful number, since it uses less digits than its factorization.

428877625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538 (or 2528 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The square root of 428877625 is about 20709.3608061669. The cubic root of 428877625 is about 754.1269530621.

The spelling of 428877625 in words is "four hundred twenty-eight million, eight hundred seventy-seven thousand, six hundred twenty-five".