1025859 has 4 divisors (see below), whose sum is σ = 1367816. Its totient is φ = 683904.

The previous prime is 1025839. The next prime is 1025873. The reversal of 1025859 is 9585201.

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

It is not a de Polignac number, because 1025859 - 2⁹ = 1025347 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1025819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170974 + ... + 170979.

It is an arithmetic number, because the mean of its divisors is an integer number (341954).

2^1025859 is an apocalyptic number.

1025859 is a deficient number, since it is larger than the sum of its proper divisors (341957).

1025859 is an equidigital number, since it uses as much as digits as its factorization.

1025859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341956.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1025859 is about 1012.8469775835. The cubic root of 1025859 is about 100.8546417337.

The spelling of 1025859 in words is "one million, twenty-five thousand, eight hundred fifty-nine".