811425 has 24 divisors (see below), whose sum is σ = 1388800. Its totient is φ = 417600.

The previous prime is 811411. The next prime is 811429. The reversal of 811425 is 524118.

It is not a de Polignac number, because 811425 - 2⁷ = 811297 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811425.

It is not an unprimeable number, because it can be changed into a prime (811429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2151 + ... + 2499.

2⁸¹¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

811425 is a deficient number, since it is larger than the sum of its proper divisors (577375).

811425 is a wasteful number, since it uses less digits than its factorization.

811425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 811425 is about 900.7913187859. The cubic root of 811425 is about 93.2716074293.

The spelling of 811425 in words is "eight hundred eleven thousand, four hundred twenty-five".