1265845 has 16 divisors (see below), whose sum is σ = 1768320. Its totient is φ = 851904.

The previous prime is 1265843. The next prime is 1265857. The reversal of 1265845 is 5485621.

It is a cyclic number.

It is not a de Polignac number, because 1265845 - 2¹ = 1265843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1759 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (110520).

2^1265845 is an apocalyptic number.

It is an amenable number.

1265845 is a deficient number, since it is larger than the sum of its proper divisors (502475).

1265845 is an equidigital number, since it uses as much as digits as its factorization.

1265845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its digits is 9600, while the sum is 31.

The square root of 1265845 is about 1125.0977735290. The cubic root of 1265845 is about 108.1749849636.

The spelling of 1265845 in words is "one million, two hundred sixty-five thousand, eight hundred forty-five".