1025565 has 8 divisors (see below), whose sum is σ = 1640928. Its totient is φ = 546960.

The previous prime is 1025561. The next prime is 1025579. The reversal of 1025565 is 5655201.

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

It is not a de Polignac number, because 1025565 - 2² = 1025561 is a prime.

1025565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025561) 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, 34171 + ... + 34200.

It is an arithmetic number, because the mean of its divisors is an integer number (205116).

2^1025565 is an apocalyptic number.

1025565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1025565 is a deficient number, since it is larger than the sum of its proper divisors (615363).

1025565 is an equidigital number, since it uses as much as digits as its factorization.

1025565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68379.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1025565 is about 1012.7018317353. The cubic root of 1025565 is about 100.8450061997.

The spelling of 1025565 in words is "one million, twenty-five thousand, five hundred sixty-five".