1285065 has 40 divisors (see below), whose sum is σ = 2439360. Its totient is φ = 645408.

The previous prime is 1285061. The next prime is 1285069. The reversal of 1285065 is 5605821.

It is an interprime number because it is at equal distance from previous prime (1285061) and next prime (1285069).

It is not a de Polignac number, because 1285065 - 2² = 1285061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1285061) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7612 + ... + 7778.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2^1285065 is an apocalyptic number.

1285065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1285065 is a deficient number, since it is larger than the sum of its proper divisors (1154295).

1285065 is a wasteful number, since it uses less digits than its factorization.

1285065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1285065 is about 1133.6070747839. The cubic root of 1285065 is about 108.7197299819.

The spelling of 1285065 in words is "one million, two hundred eighty-five thousand, sixty-five".