8420925 has 12 divisors (see below), whose sum is σ = 13922720. Its totient is φ = 4491120.

The previous prime is 8420917. The next prime is 8420927. The reversal of 8420925 is 5290248.

8420925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8420925 - 2³ = 8420917 is a prime.

It is a super-3 number, since 3×8420925³ (a number of 22 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8420892 and 8420901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56065 + ... + 56214.

Almost surely, 2^8420925 is an apocalyptic number.

It is an amenable number.

8420925 is a deficient number, since it is larger than the sum of its proper divisors (5501795).

8420925 is a wasteful number, since it uses less digits than its factorization.

8420925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112292 (or 112287 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8420925 is about 2901.8830093579. The cubic root of 8420925 is about 203.4479257920.

The spelling of 8420925 in words is "eight million, four hundred twenty thousand, nine hundred twenty-five".