425897 has 4 divisors (see below), whose sum is σ = 429780. Its totient is φ = 422016.

The previous prime is 425879. The next prime is 425899. The reversal of 425897 is 798524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 151321 + 274576 = 389^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 425897 - 2⁸ = 425641 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425897.

It is not an unprimeable number, because it can be changed into a prime (425899) 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 3 ways as a sum of consecutive naturals, for example, 1772 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (107445).

2⁴²⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

425897 is a deficient number, since it is larger than the sum of its proper divisors (3883).

425897 is a wasteful number, since it uses less digits than its factorization.

425897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882.

The product of its digits is 20160, while the sum is 35.

The square root of 425897 is about 652.6078454938. The cubic root of 425897 is about 75.2375873096.

The spelling of 425897 in words is "four hundred twenty-five thousand, eight hundred ninety-seven".