1265401 has 4 divisors (see below), whose sum is σ = 1267812. Its totient is φ = 1262992.

The previous prime is 1265393. The next prime is 1265431. The reversal of 1265401 is 1045621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57600 + 1207801 = 240^2 + 1099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1265401 - 2³ = 1265393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1265431) 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 3 ways as a sum of consecutive naturals, for example, 46 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (316953).

2^1265401 is an apocalyptic number.

It is an amenable number.

1265401 is a deficient number, since it is larger than the sum of its proper divisors (2411).

1265401 is an equidigital number, since it uses as much as digits as its factorization.

1265401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2410.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1265401 is about 1124.9004400390. The cubic root of 1265401 is about 108.1623358873.

The spelling of 1265401 in words is "one million, two hundred sixty-five thousand, four hundred one".