425845 has 16 divisors (see below), whose sum is σ = 610560. Its totient is φ = 279312.

The previous prime is 425839. The next prime is 425851. The reversal of 425845 is 548524.

It is an interprime number because it is at equal distance from previous prime (425839) and next prime (425851).

It is not a de Polignac number, because 425845 - 2³ = 425837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18504 + ... + 18526.

It is an arithmetic number, because the mean of its divisors is an integer number (38160).

2⁴²⁵⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

425845 is a deficient number, since it is larger than the sum of its proper divisors (184715).

425845 is an frugal number, since it uses more digits than its factorization.

425845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 35 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 425845 is about 652.5680041191. The cubic root of 425845 is about 75.2345251343.

The spelling of 425845 in words is "four hundred twenty-five thousand, eight hundred forty-five".