428170525 has 12 divisors (see below), whose sum is σ = 531232864. Its totient is φ = 342342000.

The previous prime is 428170499. The next prime is 428170573. The reversal of 428170525 is 525071824.

It is a happy number.

It is not a de Polignac number, because 428170525 - 2⁷ = 428170397 is a prime.

It is a Duffinian number.

It is a congruent 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, 54070 + ... + 61480.

Almost surely, 2^428170525 is an apocalyptic number.

It is an amenable number.

428170525 is a deficient number, since it is larger than the sum of its proper divisors (103062339).

428170525 is a wasteful number, since it uses less digits than its factorization.

428170525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732 (or 9727 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 428170525 is about 20692.2817736469. The cubic root of 428170525 is about 753.7122765027.

The spelling of 428170525 in words is "four hundred twenty-eight million, one hundred seventy thousand, five hundred twenty-five".