1025779 has 8 divisors (see below), whose sum is σ = 1064448. Its totient is φ = 987840.

The previous prime is 1025767. The next prime is 1025789. The reversal of 1025779 is 9775201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1025779 - 2⁵ = 1025747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5109 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^1025779 is an apocalyptic number.

1025779 is a deficient number, since it is larger than the sum of its proper divisors (38669).

1025779 is a wasteful number, since it uses less digits than its factorization.

1025779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 1025779 is about 1012.8074841746. The cubic root of 1025779 is about 100.8520200020.

The spelling of 1025779 in words is "one million, twenty-five thousand, seven hundred seventy-nine".