1025765 has 16 divisors (see below), whose sum is σ = 1360128. Its totient is φ = 737856.

The previous prime is 1025749. The next prime is 1025767. The reversal of 1025765 is 5675201.

It is a cyclic number.

It is not a de Polignac number, because 1025765 - 2⁴ = 1025749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025767) 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 15 ways as a sum of consecutive naturals, for example, 2612 + ... + 2978.

It is an arithmetic number, because the mean of its divisors is an integer number (85008).

2^1025765 is an apocalyptic number.

It is an amenable number.

1025765 is a deficient number, since it is larger than the sum of its proper divisors (334363).

1025765 is a wasteful number, since it uses less digits than its factorization.

1025765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 1025765 is about 1012.8005726697. The cubic root of 1025765 is about 100.8515611850.

The spelling of 1025765 in words is "one million, twenty-five thousand, seven hundred sixty-five".